C Data Tables for Chapter 4

Category Prevalence for Each Topic

Aesthetics

Table C.1: Three measures of the prevalence of Aesthetics in each year.
Year Count Weighted Count Weighted Frequency
1876 1 0.4 0.9%
1877 0 0.7 1.7%
1878 2 1.8 4.5%
1879 0 0.7 1.9%
1880 1 0.8 2.5%
1881 1 0.8 2.6%
1882 0 0.2 0.7%
1883 0 0.1 0.3%
1884 0 0.6 2.1%
1885 0 0.2 1.0%
1886 0 0.1 0.3%
1887 0 0.5 1.6%
1888 0 0.2 0.4%
1889 0 0.2 0.6%
1890 3 1.8 3.9%
1891 2 1.3 4.3%
1892 2 2.0 3.3%
1893 1 1.7 2.6%
1894 0 1.3 1.8%
1895 2 1.7 2.4%
1896 1 0.9 1.4%
1897 1 0.9 1.6%
1898 0 0.3 0.5%
1899 1 0.8 1.9%
1900 1 1.0 2.1%
1901 4 2.1 3.6%
1902 0 0.4 0.8%
1903 2 1.1 2.1%
1904 1 0.6 1.0%
1905 1 1.0 1.5%
1906 0 0.5 0.8%
1907 0 0.2 0.4%
1908 0 0.5 0.8%
1909 1 0.7 1.3%
1910 2 1.3 2.2%
1911 0 0.3 0.5%
1912 1 1.0 1.5%
1913 0 0.4 0.6%
1914 1 0.5 0.8%
1915 1 0.8 1.2%
1916 0 0.3 0.4%
1917 0 0.3 0.5%
1918 1 1.1 1.5%
1919 0 1.1 1.6%
1920 4 2.4 3.6%
1921 3 2.2 2.0%
1922 5 3.9 2.8%
1923 6 3.8 2.8%
1924 2 2.2 1.9%
1925 6 3.6 3.0%
1926 8 4.7 3.8%
1927 1 1.2 0.9%
1928 8 5.5 4.1%
1929 6 3.8 3.2%
1930 3 2.3 2.2%
1931 3 3.4 3.3%
1932 2 1.4 1.1%
1933 7 3.9 3.4%
1934 4 3.1 1.6%
1935 10 6.6 4.0%
1936 4 3.5 1.9%
1937 3 3.0 1.8%
1938 8 7.3 3.7%
1939 6 4.1 2.0%
1940 9 6.9 3.3%
1941 9 7.0 3.3%
1942 8 6.8 3.2%
1943 10 7.0 3.4%
1944 13 8.4 4.5%
1945 3 3.9 2.0%
1946 6 4.7 2.1%
1947 6 5.5 2.4%
1948 11 8.2 3.2%
1949 8 7.0 2.6%
1950 7 6.6 2.4%
1951 6 6.6 2.1%
1952 14 11.0 3.5%
1953 10 8.2 2.5%
1954 7 5.8 1.7%
1955 13 11.3 3.2%
1956 7 7.1 2.0%
1957 9 9.8 2.8%
1958 20 12.8 3.5%
1959 14 11.0 3.0%
1960 10 9.0 2.6%
1961 21 14.1 3.7%
1962 12 10.8 2.9%
1963 5 8.3 2.2%
1964 7 8.8 2.3%
1965 9 8.4 2.1%
1966 4 5.9 1.6%
1967 10 9.8 2.4%
1968 9 10.1 2.5%
1969 10 9.6 2.2%
1970 12 10.7 2.5%
1971 8 9.2 2.0%
1972 14 12.3 2.7%
1973 15 11.4 2.6%
1974 6 7.8 1.9%
1975 10 8.8 2.2%
1976 5 6.6 1.7%
1977 4 4.5 1.2%
1978 15 9.0 2.3%
1979 7 7.3 1.9%
1980 4 6.0 1.6%
1981 7 6.0 1.6%
1982 6 5.8 1.5%
1983 11 8.0 2.0%
1984 5 6.3 1.6%
1985 9 7.2 1.7%
1986 6 6.0 1.5%
1987 5 6.7 1.7%
1988 6 6.1 1.6%
1989 5 5.7 1.5%
1990 1 4.1 1.1%
1991 7 6.4 1.7%
1992 0 2.4 0.7%
1993 4 5.6 1.5%
1994 2 3.3 0.9%
1995 5 4.6 1.3%
1996 3 4.5 1.2%
1997 5 6.3 1.6%
1998 0 2.2 0.7%
1999 2 4.0 1.0%
2000 5 5.4 1.2%
2001 5 4.6 1.2%
2002 4 3.9 1.1%
2003 4 5.3 1.2%
2004 1 3.4 0.8%
2005 6 5.1 1.1%
2006 2 4.9 1.2%
2007 2 3.7 0.9%
2008 6 7.0 1.6%
2009 7 6.9 1.6%
2010 5 8.2 1.8%
2011 6 7.2 1.6%
2012 13 10.3 2.5%
2013 10 9.1 2.0%

Epistemology

Table C.1: Three measures of the prevalence of Epistemology in each year.
Year Count Weighted Count Weighted Frequency
1876 0 0.4 0.7%
1877 0 0.8 2.1%
1878 0 0.6 1.6%
1879 0 0.4 1.0%
1880 0 0.4 1.1%
1881 0 0.3 1.0%
1882 0 0.5 1.5%
1883 0 0.3 1.0%
1884 0 0.2 0.8%
1885 0 0.2 0.7%
1886 0 0.2 0.6%
1887 0 0.1 0.4%
1888 1 0.8 1.8%
1889 0 0.2 0.6%
1890 0 0.4 0.8%
1891 0 0.4 1.2%
1892 0 0.7 1.2%
1893 0 1.0 1.6%
1894 0 1.4 2.1%
1895 0 1.1 1.6%
1896 0 1.1 1.7%
1897 0 0.4 0.7%
1898 0 0.8 1.4%
1899 0 0.3 0.7%
1900 0 0.3 0.5%
1901 0 0.5 0.9%
1902 0 0.5 1.0%
1903 1 0.9 1.7%
1904 0 0.9 1.6%
1905 0 0.7 1.1%
1906 0 1.2 1.9%
1907 0 1.0 1.6%
1908 0 0.8 1.2%
1909 0 0.9 1.6%
1910 0 1.4 2.4%
1911 0 0.8 1.3%
1912 0 0.9 1.3%
1913 0 0.6 0.9%
1914 0 1.6 2.3%
1915 0 1.5 2.3%
1916 0 1.5 1.9%
1917 0 1.7 2.4%
1918 0 1.2 1.6%
1919 0 1.3 1.8%
1920 0 0.9 1.4%
1921 1 2.5 2.2%
1922 0 2.5 1.8%
1923 0 1.8 1.4%
1924 1 2.4 2.1%
1925 1 1.8 1.5%
1926 1 1.7 1.3%
1927 1 2.3 1.9%
1928 0 2.8 2.1%
1929 2 2.6 2.2%
1930 0 2.0 1.9%
1931 0 1.3 1.3%
1932 0 2.1 1.8%
1933 0 2.2 1.9%
1934 1 4.2 2.2%
1935 0 2.2 1.4%
1936 0 2.7 1.5%
1937 0 2.6 1.5%
1938 0 3.0 1.5%
1939 1 3.2 1.6%
1940 0 2.6 1.3%
1941 0 3.6 1.7%
1942 0 4.1 1.9%
1943 2 4.2 2.1%
1944 0 3.0 1.6%
1945 1 4.6 2.4%
1946 2 5.0 2.2%
1947 0 3.8 1.7%
1948 0 4.3 1.7%
1949 1 5.2 1.9%
1950 1 5.1 1.8%
1951 1 6.5 2.1%
1952 1 7.7 2.4%
1953 3 6.2 1.9%
1954 3 8.5 2.5%
1955 3 8.0 2.3%
1956 5 10.7 3.0%
1957 3 8.3 2.4%
1958 3 8.7 2.3%
1959 4 9.2 2.6%
1960 2 8.3 2.4%
1961 4 12.4 3.2%
1962 8 14.1 3.8%
1963 10 14.4 3.8%
1964 9 15.7 4.1%
1965 11 17.9 4.5%
1966 9 13.1 3.4%
1967 16 17.5 4.2%
1968 13 15.8 4.0%
1969 14 18.5 4.3%
1970 13 19.3 4.4%
1971 19 23.0 5.0%
1972 13 17.2 3.8%
1973 7 17.0 3.9%
1974 15 19.5 4.8%
1975 11 17.1 4.3%
1976 14 19.3 4.9%
1977 7 16.4 4.4%
1978 16 19.9 5.1%
1979 13 17.2 4.6%
1980 22 24.5 6.6%
1981 14 19.8 5.3%
1982 16 20.5 5.2%
1983 16 21.8 5.6%
1984 22 25.4 6.5%
1985 16 21.4 5.0%
1986 22 25.1 6.3%
1987 18 22.1 5.7%
1988 26 25.1 6.4%
1989 17 23.1 6.0%
1990 10 20.5 5.4%
1991 30 27.2 7.3%
1992 27 26.5 7.3%
1993 18 20.5 5.4%
1994 19 21.3 5.8%
1995 22 21.8 6.3%
1996 33 31.0 8.0%
1997 32 28.4 7.1%
1998 19 21.0 6.3%
1999 17 23.1 5.8%
2000 38 36.8 8.1%
2001 16 23.0 5.9%
2002 26 27.7 7.5%
2003 20 26.0 5.9%
2004 36 33.4 8.3%
2005 43 40.4 9.1%
2006 31 31.7 7.9%
2007 45 39.2 9.1%
2008 43 38.4 8.9%
2009 35 35.8 8.1%
2010 51 44.2 9.5%
2011 29 34.6 7.6%
2012 52 43.1 10.3%
2013 49 42.1 9.5%

Ethics

Table C.1: Three measures of the prevalence of Ethics in each year.
Year Count Weighted Count Weighted Frequency
1876 5 5.0 9.9%
1877 8 6.0 14.9%
1878 5 4.3 10.7%
1879 1 3.0 8.3%
1880 7 5.2 15.8%
1881 3 2.7 8.6%
1882 5 3.9 12.1%
1883 4 4.3 13.5%
1884 1 2.3 8.8%
1885 2 2.0 9.2%
1886 2 2.1 7.2%
1887 1 1.7 5.4%
1888 2 3.0 7.2%
1889 1 1.3 5.0%
1890 4 4.2 8.9%
1891 2 2.4 7.7%
1892 3 4.1 6.9%
1893 3 3.1 4.8%
1894 7 5.8 8.4%
1895 6 6.1 8.6%
1896 10 6.5 9.9%
1897 11 6.6 11.6%
1898 5 4.0 7.5%
1899 1 2.4 5.8%
1900 4 4.2 8.4%
1901 2 3.7 6.2%
1902 7 5.5 11.4%
1903 2 2.8 5.3%
1904 3 4.1 7.2%
1905 0 3.5 5.7%
1906 2 3.7 6.0%
1907 4 4.1 6.6%
1908 7 5.9 8.9%
1909 1 2.9 5.2%
1910 2 2.5 4.4%
1911 3 4.2 6.6%
1912 2 3.4 5.2%
1913 3 3.6 5.4%
1914 3 4.1 6.0%
1915 1 4.8 7.2%
1916 3 4.8 6.3%
1917 5 5.2 7.5%
1918 3 5.1 6.6%
1919 3 3.3 4.8%
1920 1 3.5 5.4%
1921 5 8.3 7.5%
1922 2 7.1 5.0%
1923 4 8.6 6.4%
1924 3 5.8 5.0%
1925 8 10.4 8.8%
1926 5 7.0 5.7%
1927 5 6.9 5.5%
1928 8 9.0 6.7%
1929 3 5.7 4.8%
1930 5 5.9 5.6%
1931 7 6.9 6.8%
1932 9 9.3 7.6%
1933 8 6.9 6.0%
1934 9 10.7 5.6%
1935 5 6.5 3.9%
1936 17 14.9 8.0%
1937 19 15.1 8.8%
1938 17 15.3 7.7%
1939 24 22.5 11.0%
1940 21 18.0 8.7%
1941 15 14.7 6.9%
1942 22 19.4 9.3%
1943 17 17.4 8.5%
1944 22 22.3 11.8%
1945 25 21.6 11.1%
1946 22 23.2 10.3%
1947 20 20.2 8.8%
1948 35 29.7 11.6%
1949 39 29.5 10.8%
1950 48 34.5 12.5%
1951 42 34.0 10.8%
1952 43 33.4 10.6%
1953 31 32.8 10.2%
1954 38 36.6 10.8%
1955 47 41.1 11.8%
1956 55 44.6 12.7%
1957 60 47.3 13.7%
1958 65 50.7 13.7%
1959 59 44.8 12.4%
1960 58 47.5 13.8%
1961 60 49.2 12.7%
1962 65 51.8 14.0%
1963 68 56.9 15.1%
1964 78 58.9 15.4%
1965 68 57.0 14.5%
1966 74 60.8 16.0%
1967 66 60.4 14.6%
1968 79 66.8 16.8%
1969 66 59.6 14.0%
1970 63 54.4 12.5%
1971 87 70.1 15.3%
1972 98 80.0 17.8%
1973 77 68.4 15.5%
1974 90 70.1 17.4%
1975 80 66.3 16.8%
1976 83 68.8 17.4%
1977 64 59.4 15.9%
1978 77 65.9 16.9%
1979 71 65.2 17.4%
1980 73 63.9 17.1%
1981 71 65.1 17.4%
1982 70 59.9 15.2%
1983 77 68.1 17.3%
1984 78 66.4 17.0%
1985 105 84.9 20.0%
1986 91 73.1 18.4%
1987 71 61.4 16.0%
1988 78 63.3 16.1%
1989 72 66.5 17.2%
1990 72 60.3 16.0%
1991 71 61.7 16.6%
1992 66 58.0 16.1%
1993 64 53.6 14.2%
1994 58 57.0 15.7%
1995 63 54.2 15.7%
1996 64 60.4 15.7%
1997 68 63.2 15.7%
1998 52 49.3 14.8%
1999 62 56.6 14.3%
2000 66 63.5 13.9%
2001 58 52.6 13.5%
2002 51 45.1 12.2%
2003 91 72.7 16.4%
2004 65 59.1 14.7%
2005 60 57.4 12.9%
2006 69 60.7 15.1%
2007 67 63.7 14.8%
2008 93 77.3 17.8%
2009 74 67.1 15.3%
2010 76 69.3 14.9%
2011 75 62.9 13.8%
2012 72 63.7 15.2%
2013 80 70.4 15.9%

History of Philosophy

Table C.1: Three measures of the prevalence of History of Philosophy in each year.
Year Count Weighted Count Weighted Frequency
1876 10 10.2 20.0%
1877 9 8.1 20.2%
1878 6 4.6 11.4%
1879 8 6.8 19.0%
1880 4 3.6 11.1%
1881 3 3.4 10.8%
1882 5 3.4 10.7%
1883 7 5.4 16.8%
1884 2 2.1 8.2%
1885 1 1.4 6.3%
1886 4 3.1 10.7%
1887 5 4.6 14.9%
1888 6 5.4 12.9%
1889 0 1.3 5.0%
1890 5 4.0 8.4%
1891 3 3.3 10.5%
1892 4 3.9 6.5%
1893 8 7.4 11.4%
1894 6 5.9 8.5%
1895 6 6.7 9.4%
1896 9 7.4 11.3%
1897 4 5.4 9.4%
1898 8 7.4 14.0%
1899 11 6.8 16.6%
1900 6 5.6 11.2%
1901 5 5.6 9.5%
1902 7 5.3 11.1%
1903 6 5.8 11.1%
1904 4 7.6 13.3%
1905 9 7.3 11.8%
1906 5 7.7 12.4%
1907 7 6.4 10.4%
1908 12 10.7 16.1%
1909 12 8.6 15.4%
1910 8 6.8 11.7%
1911 6 7.3 11.4%
1912 5 7.9 12.0%
1913 6 7.4 11.0%
1914 8 8.2 12.0%
1915 12 9.6 14.3%
1916 18 13.2 17.1%
1917 12 9.2 13.3%
1918 6 7.4 9.6%
1919 3 5.5 7.8%
1920 5 6.7 10.4%
1921 13 12.1 10.9%
1922 13 12.9 9.2%
1923 12 15.1 11.3%
1924 14 13.4 11.7%
1925 18 17.2 14.5%
1926 18 17.2 13.9%
1927 18 15.1 12.1%
1928 23 18.7 14.1%
1929 17 15.1 12.7%
1930 21 17.9 17.1%
1931 12 12.4 12.2%
1932 22 17.5 14.3%
1933 13 12.2 10.7%
1934 16 16.3 8.5%
1935 20 18.0 10.9%
1936 21 20.8 11.2%
1937 28 23.3 13.6%
1938 23 23.3 11.8%
1939 33 27.1 13.3%
1940 34 29.3 14.1%
1941 36 31.5 14.7%
1942 32 28.5 13.6%
1943 33 31.9 15.7%
1944 12 18.5 9.9%
1945 17 19.9 10.2%
1946 23 26.2 11.7%
1947 36 30.0 13.1%
1948 21 25.3 9.9%
1949 26 30.5 11.2%
1950 28 27.3 9.9%
1951 37 36.4 11.6%
1952 36 32.6 10.3%
1953 45 40.4 12.5%
1954 38 38.2 11.3%
1955 42 38.0 10.9%
1956 39 37.1 10.5%
1957 30 30.1 8.7%
1958 34 32.9 8.9%
1959 41 37.3 10.3%
1960 28 28.4 8.3%
1961 28 28.5 7.4%
1962 36 32.6 8.8%
1963 36 32.5 8.6%
1964 34 32.8 8.6%
1965 29 28.3 7.2%
1966 23 23.0 6.1%
1967 30 27.4 6.6%
1968 27 26.1 6.6%
1969 23 26.4 6.2%
1970 20 26.8 6.2%
1971 23 24.1 5.3%
1972 23 28.4 6.3%
1973 20 25.2 5.7%
1974 19 24.5 6.1%
1975 22 23.9 6.0%
1976 41 31.7 8.0%
1977 28 28.4 7.6%
1978 21 22.2 5.7%
1979 28 25.1 6.7%
1980 27 24.7 6.6%
1981 23 22.0 5.9%
1982 34 30.0 7.6%
1983 32 26.7 6.8%
1984 19 20.8 5.3%
1985 32 27.7 6.5%
1986 16 18.8 4.7%
1987 24 22.7 5.9%
1988 22 23.8 6.0%
1989 13 16.9 4.4%
1990 26 26.0 6.9%
1991 13 18.9 5.1%
1992 16 16.6 4.6%
1993 19 20.6 5.5%
1994 9 13.9 3.8%
1995 10 13.9 4.0%
1996 7 12.7 3.3%
1997 6 15.3 3.8%
1998 10 14.0 4.2%
1999 12 15.7 4.0%
2000 15 19.1 4.2%
2001 17 16.1 4.1%
2002 10 16.6 4.5%
2003 7 14.4 3.2%
2004 13 17.0 4.2%
2005 15 14.8 3.3%
2006 12 16.1 4.0%
2007 15 17.2 4.0%
2008 8 14.1 3.3%
2009 15 16.1 3.7%
2010 11 15.1 3.2%
2011 16 16.8 3.7%
2012 10 15.3 3.7%
2013 10 17.9 4.0%

Idealism

Table C.1: Three measures of the prevalence of Idealism in each year.
Year Count Weighted Count Weighted Frequency
1876 4 4.0 7.9%
1877 1 3.4 8.6%
1878 2 2.4 6.0%
1879 3 2.9 8.2%
1880 1 2.3 7.0%
1881 3 4.0 13.0%
1882 7 4.7 14.7%
1883 2 2.7 8.6%
1884 5 3.4 12.9%
1885 2 2.2 10.1%
1886 5 3.4 11.6%
1887 1 2.1 6.6%
1888 7 5.0 11.8%
1889 3 2.7 10.5%
1890 5 6.5 13.9%
1891 6 4.4 14.2%
1892 14 9.3 15.5%
1893 22 13.3 20.5%
1894 20 14.1 20.5%
1895 15 11.5 16.2%
1896 15 11.1 17.1%
1897 13 11.0 19.2%
1898 18 11.9 22.4%
1899 10 8.8 21.5%
1900 13 9.1 18.2%
1901 16 12.3 20.8%
1902 15 10.6 22.1%
1903 21 14.7 28.3%
1904 17 12.3 21.6%
1905 20 13.9 22.5%
1906 22 14.4 23.2%
1907 23 16.8 27.1%
1908 22 15.4 23.3%
1909 21 16.3 29.1%
1910 16 12.6 21.7%
1911 19 14.7 23.0%
1912 21 14.8 22.4%
1913 18 14.1 21.0%
1914 16 12.6 18.5%
1915 14 11.2 16.7%
1916 16 14.1 18.3%
1917 13 12.3 17.8%
1918 14 12.5 16.2%
1919 21 15.3 21.9%
1920 15 12.3 19.0%
1921 16 13.3 12.0%
1922 23 20.5 14.5%
1923 32 22.3 16.6%
1924 21 17.8 15.5%
1925 32 21.8 18.4%
1926 14 15.3 12.3%
1927 18 16.7 13.4%
1928 12 14.4 10.8%
1929 18 16.2 13.6%
1930 14 12.6 12.0%
1931 11 11.4 11.2%
1932 20 14.9 12.2%
1933 19 18.4 16.2%
1934 20 18.7 9.8%
1935 13 14.9 9.0%
1936 16 14.3 7.7%
1937 14 14.0 8.2%
1938 17 17.5 8.9%
1939 12 14.5 7.1%
1940 8 15.4 7.4%
1941 11 15.5 7.3%
1942 8 13.8 6.6%
1943 6 11.3 5.6%
1944 8 12.2 6.5%
1945 4 8.7 4.5%
1946 14 12.9 5.8%
1947 11 13.3 5.8%
1948 9 12.3 4.8%
1949 5 10.3 3.8%
1950 2 8.4 3.1%
1951 8 11.8 3.7%
1952 4 10.2 3.2%
1953 4 9.8 3.0%
1954 3 9.8 2.9%
1955 4 9.8 2.8%
1956 8 9.6 2.7%
1957 7 8.6 2.5%
1958 10 14.7 4.0%
1959 3 8.6 2.4%
1960 3 5.8 1.7%
1961 4 7.7 2.0%
1962 0 6.5 1.8%
1963 1 5.6 1.5%
1964 0 4.4 1.2%
1965 1 3.6 0.9%
1966 0 4.3 1.1%
1967 1 4.6 1.1%
1968 2 3.5 0.9%
1969 4 4.6 1.1%
1970 1 4.1 0.9%
1971 2 3.9 0.8%
1972 1 3.3 0.7%
1973 0 2.0 0.5%
1974 0 3.7 0.9%
1975 0 2.2 0.6%
1976 0 2.6 0.7%
1977 0 3.1 0.8%
1978 0 1.8 0.5%
1979 2 3.0 0.8%
1980 1 3.5 0.9%
1981 0 2.5 0.7%
1982 0 2.8 0.7%
1983 0 2.8 0.7%
1984 0 2.0 0.5%
1985 0 2.6 0.6%
1986 0 1.8 0.4%
1987 0 2.7 0.7%
1988 0 2.4 0.6%
1989 1 2.3 0.6%
1990 0 2.7 0.7%
1991 1 2.8 0.7%
1992 0 2.8 0.8%
1993 0 1.9 0.5%
1994 2 2.4 0.7%
1995 0 1.9 0.5%
1996 0 2.1 0.5%
1997 0 2.2 0.5%
1998 0 1.3 0.4%
1999 0 1.4 0.3%
2000 0 1.8 0.4%
2001 0 1.8 0.5%
2002 0 1.7 0.5%
2003 0 1.7 0.4%
2004 0 1.9 0.5%
2005 0 1.8 0.4%
2006 0 1.4 0.3%
2007 0 1.4 0.3%
2008 0 1.6 0.4%
2009 0 1.3 0.3%
2010 0 1.4 0.3%
2011 0 1.6 0.4%
2012 0 0.7 0.2%
2013 1 1.9 0.4%

Logic and Mathematics

Table C.1: Three measures of the prevalence of Logic and Mathematics in each year.
Year Count Weighted Count Weighted Frequency
1876 4 3.7 7.3%
1877 3 2.8 7.0%
1878 6 4.9 12.3%
1879 4 3.2 8.8%
1880 2 2.3 6.9%
1881 2 1.6 5.1%
1882 3 2.4 7.5%
1883 5 3.8 11.9%
1884 0 0.7 2.8%
1885 1 1.0 4.5%
1886 0 0.9 3.2%
1887 2 2.3 7.3%
1888 3 2.7 6.5%
1889 0 1.1 4.2%
1890 2 2.4 5.2%
1891 1 1.6 5.1%
1892 5 4.9 8.2%
1893 4 4.3 6.7%
1894 5 5.9 8.5%
1895 5 5.4 7.6%
1896 4 4.3 6.7%
1897 4 4.5 7.9%
1898 2 3.7 7.0%
1899 3 2.9 7.1%
1900 6 4.5 8.9%
1901 0 2.3 3.9%
1902 3 4.0 8.4%
1903 4 4.9 9.3%
1904 3 4.1 7.2%
1905 11 10.0 16.2%
1906 5 5.2 8.3%
1907 4 5.9 9.5%
1908 10 8.8 13.4%
1909 3 3.3 6.0%
1910 8 8.5 14.6%
1911 5 7.2 11.3%
1912 11 9.7 14.6%
1913 6 7.5 11.2%
1914 15 11.6 17.1%
1915 10 8.3 12.3%
1916 8 7.9 10.3%
1917 12 8.3 12.1%
1918 11 8.9 11.6%
1919 4 6.0 8.6%
1920 4 4.6 7.0%
1921 5 8.3 7.5%
1922 8 13.2 9.3%
1923 14 12.8 9.6%
1924 8 9.5 8.3%
1925 8 9.8 8.2%
1926 10 10.3 8.3%
1927 20 16.2 13.0%
1928 25 16.6 12.5%
1929 18 15.8 13.3%
1930 15 14.8 14.1%
1931 15 13.3 13.0%
1932 23 20.1 16.5%
1933 29 24.2 21.2%
1934 56 40.5 21.1%
1935 35 30.7 18.6%
1936 54 43.0 23.1%
1937 41 34.6 20.3%
1938 37 33.5 16.9%
1939 38 33.3 16.3%
1940 31 30.2 14.6%
1941 29 26.3 12.3%
1942 36 30.1 14.3%
1943 28 25.9 12.7%
1944 35 28.9 15.4%
1945 23 26.6 13.7%
1946 36 32.2 14.4%
1947 50 39.7 17.3%
1948 47 41.1 16.0%
1949 57 49.3 18.1%
1950 65 53.5 19.4%
1951 64 53.9 17.2%
1952 52 51.1 16.2%
1953 59 51.7 16.0%
1954 64 54.5 16.1%
1955 58 51.5 14.8%
1956 61 55.4 15.7%
1957 58 56.6 16.4%
1958 62 58.9 15.9%
1959 60 56.9 15.7%
1960 63 59.6 17.3%
1961 70 62.0 16.1%
1962 57 58.3 15.8%
1963 57 58.5 15.5%
1964 69 62.9 16.5%
1965 76 74.1 18.8%
1966 61 62.2 16.4%
1967 66 68.1 16.5%
1968 69 67.0 16.8%
1969 76 73.6 17.2%
1970 79 71.5 16.5%
1971 84 78.4 17.1%
1972 64 64.5 14.3%
1973 48 57.8 13.1%
1974 54 53.7 13.3%
1975 48 52.5 13.3%
1976 42 47.2 12.0%
1977 38 40.5 10.9%
1978 35 41.7 10.7%
1979 39 44.2 11.8%
1980 37 42.3 11.3%
1981 45 41.1 11.0%
1982 48 45.2 11.5%
1983 38 40.0 10.2%
1984 39 44.0 11.3%
1985 44 42.2 9.9%
1986 42 43.2 10.9%
1987 35 38.3 10.0%
1988 35 37.7 9.6%
1989 39 40.9 10.6%
1990 36 35.0 9.3%
1991 23 32.2 8.7%
1992 29 32.1 8.9%
1993 34 38.6 10.2%
1994 28 34.3 9.4%
1995 29 34.2 9.9%
1996 26 33.6 8.7%
1997 38 40.2 10.0%
1998 34 34.4 10.4%
1999 40 42.2 10.7%
2000 48 47.8 10.5%
2001 37 38.8 9.9%
2002 56 48.9 13.2%
2003 43 45.7 10.3%
2004 38 41.7 10.3%
2005 40 46.1 10.3%
2006 30 36.0 8.9%
2007 37 42.0 9.8%
2008 37 39.4 9.1%
2009 45 44.5 10.1%
2010 43 48.5 10.4%
2011 38 43.0 9.4%
2012 35 38.0 9.1%
2013 22 32.8 7.4%

Metaphysics

Table C.1: Three measures of the prevalence of Metaphysics in each year.
Year Count Weighted Count Weighted Frequency
1876 3 4.8 9.4%
1877 3 2.5 6.2%
1878 2 2.5 6.3%
1879 0 1.8 4.9%
1880 2 2.2 6.8%
1881 0 1.1 3.6%
1882 0 1.6 4.9%
1883 0 0.7 2.1%
1884 0 1.3 4.9%
1885 1 1.9 8.8%
1886 4 3.5 12.2%
1887 1 2.9 9.4%
1888 3 3.3 7.9%
1889 2 2.6 9.8%
1890 1 2.2 4.8%
1891 0 1.0 3.3%
1892 1 2.5 4.1%
1893 1 3.8 5.8%
1894 1 3.1 4.4%
1895 2 4.2 5.9%
1896 4 5.3 8.2%
1897 1 2.1 3.7%
1898 0 1.8 3.5%
1899 1 2.6 6.3%
1900 1 2.7 5.3%
1901 7 5.6 9.4%
1902 2 3.1 6.5%
1903 0 1.9 3.6%
1904 1 2.4 4.2%
1905 1 2.1 3.4%
1906 1 2.5 4.1%
1907 3 3.8 6.2%
1908 3 3.6 5.4%
1909 2 3.0 5.4%
1910 2 2.7 4.6%
1911 2 2.7 4.3%
1912 2 4.4 6.6%
1913 6 5.3 8.0%
1914 2 4.2 6.1%
1915 2 3.5 5.2%
1916 3 5.3 6.9%
1917 2 4.2 6.1%
1918 1 3.6 4.7%
1919 2 3.1 4.5%
1920 2 2.7 4.2%
1921 4 4.8 4.3%
1922 10 10.6 7.5%
1923 4 6.9 5.1%
1924 2 6.0 5.3%
1925 3 5.6 4.7%
1926 9 9.3 7.5%
1927 3 7.2 5.7%
1928 4 7.2 5.4%
1929 3 6.8 5.7%
1930 6 7.4 7.1%
1931 6 7.6 7.4%
1932 8 11.3 9.3%
1933 2 4.2 3.7%
1934 9 13.6 7.1%
1935 4 10.0 6.1%
1936 7 9.4 5.1%
1937 7 9.9 5.8%
1938 8 9.2 4.6%
1939 1 7.4 3.6%
1940 5 9.8 4.7%
1941 6 13.0 6.1%
1942 5 10.7 5.1%
1943 4 7.5 3.7%
1944 6 7.8 4.1%
1945 1 6.0 3.1%
1946 9 10.8 4.8%
1947 6 9.4 4.1%
1948 5 10.5 4.1%
1949 6 11.6 4.3%
1950 12 15.9 5.8%
1951 9 16.1 5.1%
1952 16 20.3 6.4%
1953 16 18.3 5.7%
1954 16 20.0 5.9%
1955 17 23.2 6.6%
1956 8 16.2 4.6%
1957 14 19.5 5.6%
1958 13 20.6 5.5%
1959 7 15.5 4.3%
1960 22 21.8 6.3%
1961 12 21.1 5.5%
1962 18 20.4 5.5%
1963 20 23.4 6.2%
1964 17 22.4 5.9%
1965 23 25.2 6.4%
1966 23 23.1 6.1%
1967 24 27.6 6.7%
1968 21 26.3 6.6%
1969 28 32.1 7.5%
1970 30 35.9 8.3%
1971 24 31.9 7.0%
1972 17 28.3 6.3%
1973 39 39.5 9.0%
1974 24 31.0 7.7%
1975 24 25.9 6.6%
1976 32 30.0 7.6%
1977 30 27.9 7.5%
1978 32 31.1 8.0%
1979 37 34.9 9.3%
1980 32 31.4 8.4%
1981 32 32.0 8.5%
1982 34 37.2 9.5%
1983 28 29.8 7.6%
1984 32 33.5 8.6%
1985 39 38.7 9.1%
1986 42 43.7 11.0%
1987 48 44.0 11.5%
1988 37 39.8 10.1%
1989 33 34.2 8.9%
1990 42 34.9 9.2%
1991 38 36.3 9.8%
1992 36 38.0 10.5%
1993 35 39.0 10.3%
1994 31 34.9 9.6%
1995 29 32.6 9.5%
1996 28 33.8 8.8%
1997 39 39.6 9.8%
1998 37 38.7 11.7%
1999 51 46.0 11.6%
2000 36 46.9 10.3%
2001 37 41.0 10.5%
2002 43 39.3 10.6%
2003 46 50.8 11.4%
2004 33 39.9 9.9%
2005 53 52.0 11.7%
2006 63 53.4 13.3%
2007 36 45.3 10.5%
2008 32 38.2 8.8%
2009 45 49.5 11.3%
2010 59 56.7 12.2%
2011 57 53.4 11.7%
2012 49 46.6 11.1%
2013 40 43.1 9.7%

Philosophy of Language

Table C.1: Three measures of the prevalence of Philosophy of Language in each year.
Year Count Weighted Count Weighted Frequency
1876 0 0.4 0.9%
1877 0 0.4 1.0%
1878 0 0.7 1.8%
1879 0 0.9 2.4%
1880 0 0.7 2.2%
1881 0 1.0 3.2%
1882 0 0.5 1.7%
1883 1 0.9 2.7%
1884 0 0.2 0.7%
1885 0 0.1 0.6%
1886 0 0.6 2.0%
1887 0 0.3 1.1%
1888 0 0.3 0.8%
1889 0 0.3 1.3%
1890 0 0.4 0.9%
1891 0 0.7 2.3%
1892 0 1.0 1.7%
1893 0 1.6 2.5%
1894 0 1.1 1.6%
1895 1 1.5 2.2%
1896 0 1.1 1.7%
1897 0 0.5 0.9%
1898 0 0.6 1.1%
1899 1 0.6 1.4%
1900 0 0.5 1.0%
1901 1 0.5 0.8%
1902 0 0.3 0.7%
1903 0 0.4 0.8%
1904 0 0.6 1.0%
1905 1 1.2 2.0%
1906 0 0.8 1.2%
1907 0 1.5 2.4%
1908 0 0.8 1.2%
1909 0 0.4 0.7%
1910 1 1.4 2.3%
1911 2 1.8 2.8%
1912 0 0.8 1.3%
1913 1 0.9 1.3%
1914 0 1.1 1.6%
1915 1 1.5 2.3%
1916 0 1.3 1.7%
1917 0 1.0 1.4%
1918 0 1.3 1.7%
1919 0 1.1 1.6%
1920 0 0.8 1.3%
1921 2 1.7 1.5%
1922 0 2.6 1.9%
1923 0 1.5 1.1%
1924 1 2.2 1.9%
1925 1 1.7 1.4%
1926 0 1.8 1.5%
1927 0 2.5 2.0%
1928 0 2.8 2.1%
1929 3 3.4 2.8%
1930 0 1.6 1.5%
1931 0 2.1 2.1%
1932 1 3.5 2.8%
1933 6 5.4 4.7%
1934 10 10.3 5.3%
1935 2 4.9 3.0%
1936 9 11.1 5.9%
1937 9 9.5 5.6%
1938 11 12.2 6.2%
1939 6 9.7 4.8%
1940 7 8.8 4.2%
1941 3 6.9 3.2%
1942 4 8.6 4.1%
1943 6 7.9 3.9%
1944 5 8.1 4.3%
1945 3 7.0 3.6%
1946 4 8.7 3.9%
1947 1 8.3 3.6%
1948 12 15.3 6.0%
1949 20 19.4 7.1%
1950 15 22.7 8.3%
1951 21 23.1 7.4%
1952 22 23.0 7.3%
1953 24 26.1 8.1%
1954 18 24.7 7.3%
1955 19 24.9 7.1%
1956 27 31.1 8.8%
1957 27 30.8 8.9%
1958 21 30.2 8.1%
1959 29 32.1 8.9%
1960 19 28.5 8.3%
1961 29 32.8 8.5%
1962 38 35.8 9.7%
1963 28 31.5 8.3%
1964 26 30.8 8.1%
1965 36 38.1 9.7%
1966 20 27.6 7.3%
1967 39 38.9 9.4%
1968 40 37.6 9.5%
1969 41 40.2 9.4%
1970 48 43.1 9.9%
1971 44 43.5 9.5%
1972 41 40.3 9.0%
1973 37 37.6 8.5%
1974 33 32.3 8.0%
1975 40 36.6 9.3%
1976 31 29.2 7.4%
1977 30 30.5 8.2%
1978 37 32.6 8.4%
1979 35 36.0 9.6%
1980 28 25.7 6.9%
1981 22 24.1 6.4%
1982 35 35.4 9.0%
1983 32 29.1 7.4%
1984 42 35.0 9.0%
1985 33 33.7 7.9%
1986 26 26.1 6.6%
1987 35 30.5 7.9%
1988 23 27.6 7.0%
1989 21 22.8 5.9%
1990 23 25.7 6.8%
1991 23 25.1 6.7%
1992 30 27.8 7.7%
1993 25 29.3 7.8%
1994 25 23.3 6.4%
1995 31 30.3 8.8%
1996 42 33.9 8.8%
1997 43 35.5 8.8%
1998 37 31.4 9.5%
1999 37 30.8 7.8%
2000 32 30.6 6.7%
2001 29 29.7 7.6%
2002 27 30.3 8.2%
2003 26 26.7 6.0%
2004 26 26.0 6.5%
2005 38 35.0 7.9%
2006 28 31.3 7.8%
2007 41 35.6 8.3%
2008 33 32.3 7.5%
2009 39 32.9 7.5%
2010 40 35.4 7.6%
2011 34 34.1 7.5%
2012 35 35.1 8.4%
2013 42 36.2 8.2%

Philosophy of Mind

Table C.1: Three measures of the prevalence of Philosophy of Mind in each year.
Year Count Weighted Count Weighted Frequency
1876 14 12.6 24.7%
1877 13 9.5 23.7%
1878 12 11.0 27.5%
1879 12 8.6 23.9%
1880 11 7.4 22.5%
1881 16 10.9 35.0%
1882 11 9.2 28.9%
1883 9 8.3 25.9%
1884 13 9.5 36.5%
1885 12 8.8 39.9%
1886 10 8.5 29.2%
1887 17 12.0 38.8%
1888 17 13.9 33.2%
1889 17 12.9 49.7%
1890 21 15.5 33.1%
1891 15 10.9 35.0%
1892 27 20.6 34.3%
1893 16 16.9 25.9%
1894 26 20.5 29.8%
1895 26 20.7 29.2%
1896 13 13.4 20.6%
1897 16 15.0 26.4%
1898 15 13.4 25.2%
1899 7 8.5 20.8%
1900 12 10.9 21.8%
1901 15 15.0 25.5%
1902 10 8.6 17.8%
1903 10 10.9 21.1%
1904 23 14.7 25.8%
1905 10 10.4 16.8%
1906 17 14.5 23.3%
1907 15 13.2 21.4%
1908 10 11.4 17.3%
1909 9 10.3 18.3%
1910 15 12.2 21.0%
1911 20 14.8 23.1%
1912 12 12.0 18.3%
1913 12 12.7 19.0%
1914 14 13.0 19.2%
1915 14 12.4 18.5%
1916 11 11.8 15.3%
1917 14 13.3 19.2%
1918 18 15.8 20.5%
1919 19 16.1 23.0%
1920 16 13.2 20.4%
1921 22 21.9 19.7%
1922 43 30.9 21.9%
1923 26 24.3 18.1%
1924 26 21.7 18.9%
1925 12 17.7 14.9%
1926 29 23.4 18.9%
1927 27 22.6 18.1%
1928 23 22.1 16.6%
1929 20 21.4 18.0%
1930 11 13.3 12.7%
1931 19 17.9 17.5%
1932 16 16.8 13.8%
1933 17 15.7 13.7%
1934 27 30.3 15.8%
1935 27 24.0 14.5%
1936 23 24.6 13.2%
1937 13 18.5 10.8%
1938 27 26.4 13.3%
1939 21 26.4 12.9%
1940 33 29.5 14.2%
1941 29 28.5 13.3%
1942 27 26.7 12.7%
1943 23 24.4 11.9%
1944 26 23.8 12.6%
1945 31 25.8 13.3%
1946 23 26.9 12.0%
1947 21 26.7 11.6%
1948 23 28.2 11.0%
1949 26 32.8 12.1%
1950 28 35.1 12.8%
1951 35 41.4 13.2%
1952 35 42.7 13.5%
1953 40 43.0 13.3%
1954 46 45.6 13.5%
1955 43 45.2 12.9%
1956 47 50.4 14.3%
1957 45 48.5 14.0%
1958 46 48.6 13.1%
1959 45 50.0 13.8%
1960 44 45.8 13.3%
1961 57 59.0 15.3%
1962 41 53.1 14.4%
1963 69 63.6 16.8%
1964 42 53.1 13.9%
1965 41 49.3 12.5%
1966 57 59.0 15.5%
1967 52 59.7 14.5%
1968 42 53.8 13.5%
1969 64 61.1 14.3%
1970 74 70.5 16.2%
1971 62 67.3 14.7%
1972 55 61.0 13.6%
1973 66 61.1 13.9%
1974 45 50.5 12.5%
1975 53 53.8 13.6%
1976 39 53.0 13.4%
1977 45 47.9 12.8%
1978 36 47.3 12.1%
1979 41 43.4 11.6%
1980 47 49.7 13.3%
1981 55 56.2 15.0%
1982 40 49.8 12.7%
1983 43 52.6 13.4%
1984 50 58.3 14.9%
1985 40 51.7 12.2%
1986 50 55.1 13.8%
1987 41 51.2 13.3%
1988 58 57.9 14.7%
1989 53 57.6 14.9%
1990 53 58.6 15.5%
1991 52 57.6 15.5%
1992 59 59.7 16.5%
1993 68 63.4 16.8%
1994 66 62.3 17.1%
1995 49 50.5 14.7%
1996 58 62.6 16.3%
1997 54 59.5 14.8%
1998 48 50.3 15.1%
1999 51 58.1 14.7%
2000 61 68.4 15.0%
2001 59 63.4 16.2%
2002 43 51.8 14.0%
2003 48 57.5 12.9%
2004 47 56.3 14.0%
2005 40 55.7 12.5%
2006 48 57.5 14.3%
2007 54 62.2 14.5%
2008 43 55.9 12.9%
2009 62 68.9 15.7%
2010 62 70.6 15.2%
2011 59 68.9 15.1%
2012 44 53.6 12.8%
2013 50 58.6 13.2%

Philosophy of Religion

Table C.1: Three measures of the prevalence of Philosophy of Religion in each year.
Year Count Weighted Count Weighted Frequency
1876 0 0.3 0.6%
1877 2 1.5 3.7%
1878 0 0.5 1.3%
1879 1 0.8 2.1%
1880 0 0.6 1.8%
1881 0 0.3 0.9%
1882 0 0.5 1.4%
1883 0 1.1 3.4%
1884 0 0.4 1.4%
1885 0 0.6 2.8%
1886 0 0.5 1.7%
1887 0 0.5 1.5%
1888 0 0.6 1.4%
1889 0 0.2 0.9%
1890 0 1.3 2.7%
1891 0 0.4 1.2%
1892 0 0.9 1.5%
1893 0 1.1 1.7%
1894 1 1.7 2.5%
1895 1 1.7 2.4%
1896 3 2.5 3.9%
1897 1 1.6 2.8%
1898 0 0.7 1.2%
1899 0 0.5 1.2%
1900 0 1.2 2.3%
1901 1 1.3 2.2%
1902 1 1.5 3.1%
1903 1 1.3 2.5%
1904 0 1.0 1.8%
1905 2 2.0 3.3%
1906 0 0.9 1.5%
1907 1 1.3 2.1%
1908 0 0.4 0.7%
1909 1 1.6 2.8%
1910 0 0.7 1.2%
1911 0 1.3 2.0%
1912 1 1.2 1.8%
1913 0 0.9 1.3%
1914 1 1.3 2.0%
1915 2 2.1 3.1%
1916 3 3.0 3.9%
1917 0 1.3 1.8%
1918 3 3.3 4.2%
1919 2 2.2 3.2%
1920 2 3.1 4.8%
1921 3 2.9 2.6%
1922 0 3.0 2.1%
1923 3 4.4 3.3%
1924 8 5.8 5.1%
1925 1 2.9 2.4%
1926 3 4.3 3.5%
1927 2 4.6 3.7%
1928 3 6.5 4.9%
1929 1 4.0 3.4%
1930 3 3.7 3.6%
1931 3 3.2 3.1%
1932 0 2.3 1.9%
1933 1 2.5 2.2%
1934 0 3.3 1.7%
1935 2 3.7 2.2%
1936 1 4.4 2.3%
1937 2 2.8 1.6%
1938 3 3.6 1.8%
1939 0 2.9 1.4%
1940 1 4.2 2.0%
1941 2 4.5 2.1%
1942 2 4.3 2.1%
1943 2 4.5 2.2%
1944 6 5.8 3.1%
1945 8 7.6 3.9%
1946 1 5.1 2.3%
1947 3 6.0 2.6%
1948 8 8.5 3.3%
1949 9 8.4 3.1%
1950 4 5.1 1.8%
1951 7 8.2 2.6%
1952 4 6.1 1.9%
1953 1 4.9 1.5%
1954 8 8.9 2.6%
1955 7 7.6 2.2%
1956 10 9.5 2.7%
1957 7 7.8 2.2%
1958 10 11.5 3.1%
1959 8 8.4 2.3%
1960 14 11.1 3.2%
1961 17 15.0 3.9%
1962 8 8.7 2.3%
1963 5 8.0 2.1%
1964 12 8.9 2.3%
1965 7 8.0 2.0%
1966 5 6.8 1.8%
1967 10 9.0 2.2%
1968 3 6.2 1.5%
1969 6 7.9 1.9%
1970 2 6.6 1.5%
1971 7 7.5 1.6%
1972 4 6.2 1.4%
1973 5 7.4 1.7%
1974 11 9.6 2.4%
1975 3 6.7 1.7%
1976 4 6.4 1.6%
1977 10 8.4 2.3%
1978 5 6.7 1.7%
1979 5 5.1 1.4%
1980 4 6.0 1.6%
1981 2 5.5 1.5%
1982 3 7.7 2.0%
1983 8 9.5 2.4%
1984 4 5.7 1.5%
1985 4 6.1 1.4%
1986 7 7.3 1.8%
1987 3 5.7 1.5%
1988 7 9.2 2.3%
1989 7 5.7 1.5%
1990 6 6.1 1.6%
1991 2 3.8 1.0%
1992 3 4.1 1.1%
1993 6 7.3 1.9%
1994 4 4.5 1.2%
1995 1 3.6 1.0%
1996 2 2.6 0.7%
1997 3 4.5 1.1%
1998 3 4.0 1.2%
1999 1 3.5 0.9%
2000 4 5.8 1.3%
2001 2 3.6 0.9%
2002 0 3.2 0.9%
2003 0 3.7 0.8%
2004 3 3.3 0.8%
2005 2 5.6 1.3%
2006 0 3.6 0.9%
2007 2 6.4 1.5%
2008 5 4.6 1.1%
2009 1 4.5 1.0%
2010 3 5.6 1.2%
2011 4 6.3 1.4%
2012 1 4.2 1.0%
2013 1 4.2 0.9%

Philosophy of Science

Table C.1: Three measures of the prevalence of Philosophy of Science in each year.
Year Count Weighted Count Weighted Frequency
1876 7 6.0 11.8%
1877 0 1.9 4.7%
1878 1 2.5 6.4%
1879 6 3.9 10.9%
1880 2 3.1 9.5%
1881 1 2.0 6.4%
1882 0 2.5 7.9%
1883 0 1.4 4.4%
1884 3 3.1 11.8%
1885 0 1.6 7.1%
1886 2 3.5 12.0%
1887 4 2.9 9.3%
1888 1 3.4 8.1%
1889 1 1.7 6.7%
1890 3 3.5 7.6%
1891 0 2.6 8.5%
1892 1 4.9 8.2%
1893 6 7.1 10.9%
1894 1 3.9 5.7%
1895 3 5.0 7.0%
1896 3 4.9 7.6%
1897 0 3.3 5.8%
1898 2 4.3 8.1%
1899 3 2.8 6.9%
1900 2 5.1 10.1%
1901 2 4.5 7.6%
1902 1 3.3 7.0%
1903 4 4.0 7.7%
1904 2 4.5 7.9%
1905 2 4.6 7.4%
1906 3 4.9 7.9%
1907 2 3.7 6.0%
1908 0 3.0 4.5%
1909 1 2.9 5.2%
1910 2 4.0 6.9%
1911 3 4.2 6.5%
1912 4 4.9 7.4%
1913 4 5.6 8.3%
1914 4 5.2 7.6%
1915 1 3.9 5.8%
1916 3 4.1 5.3%
1917 5 6.4 9.3%
1918 11 8.3 10.8%
1919 4 5.5 7.9%
1920 3 4.6 7.1%
1921 23 17.6 15.9%
1922 22 20.4 14.5%
1923 12 15.3 11.4%
1924 14 14.2 12.3%
1925 17 13.8 11.6%
1926 14 14.4 11.6%
1927 17 16.9 13.5%
1928 12 14.6 11.0%
1929 18 15.2 12.8%
1930 19 16.7 15.9%
1931 11 11.9 11.7%
1932 11 13.8 11.3%
1933 8 11.0 9.7%
1934 33 29.8 15.5%
1935 33 29.2 17.7%
1936 22 24.3 13.0%
1937 24 24.3 14.2%
1938 29 28.2 14.2%
1939 34 28.8 14.1%
1940 35 29.8 14.4%
1941 44 37.8 17.6%
1942 30 27.6 13.2%
1943 35 30.3 14.8%
1944 19 22.6 12.0%
1945 39 33.3 17.2%
1946 45 37.1 16.6%
1947 36 37.6 16.4%
1948 44 37.7 14.7%
1949 26 34.4 12.7%
1950 36 35.9 13.1%
1951 54 46.9 14.9%
1952 51 45.2 14.3%
1953 53 50.4 15.6%
1954 62 52.7 15.6%
1955 55 54.8 15.7%
1956 53 47.3 13.4%
1957 49 46.8 13.5%
1958 49 47.8 12.9%
1959 65 59.5 16.4%
1960 53 49.9 14.5%
1961 57 55.9 14.5%
1962 58 49.8 13.5%
1963 47 47.0 12.4%
1964 55 52.9 13.9%
1965 68 59.0 15.0%
1966 69 62.2 16.4%
1967 68 60.7 14.7%
1968 60 55.2 13.9%
1969 65 62.5 14.6%
1970 67 63.1 14.5%
1971 73 67.6 14.7%
1972 81 69.1 15.3%
1973 79 72.3 16.4%
1974 66 61.3 15.2%
1975 63 59.6 15.1%
1976 66 64.7 16.4%
1977 69 63.3 17.0%
1978 81 76.4 19.6%
1979 58 57.2 15.2%
1980 55 57.5 15.4%
1981 66 64.0 17.1%
1982 81 70.5 17.9%
1983 66 64.8 16.5%
1984 73 64.6 16.6%
1985 63 65.8 15.5%
1986 73 68.6 17.2%
1987 71 68.7 17.9%
1988 77 71.9 18.3%
1989 85 73.2 19.0%
1990 73 70.4 18.6%
1991 78 68.6 18.4%
1992 70 65.7 18.2%
1993 91 79.1 21.0%
1994 90 76.3 21.0%
1995 78 69.0 20.1%
1996 105 89.4 23.2%
1997 99 86.7 21.6%
1998 70 61.4 18.5%
1999 102 91.5 23.1%
2000 123 101.1 22.2%
2001 102 87.5 22.4%
2002 95 82.2 22.1%
2003 135 111.2 25.1%
2004 108 93.2 23.1%
2005 121 105.0 23.6%
2006 101 84.2 20.9%
2007 110 90.2 21.0%
2008 113 97.8 22.6%
2009 95 87.5 19.9%
2010 98 88.4 19.0%
2011 118 104.2 22.9%
2012 92 85.9 20.6%
2013 114 98.9 22.3%

Social and Political

Table C.1: Three measures of the prevalence of Social and Political in each year.
Year Count Weighted Count Weighted Frequency
1876 3 3.1 6.0%
1877 1 2.5 6.2%
1878 4 4.1 10.2%
1879 1 3.1 8.7%
1880 3 4.2 12.8%
1881 2 3.0 9.6%
1882 1 2.5 7.9%
1883 4 3.0 9.4%
1884 2 2.3 9.0%
1885 3 2.0 9.0%
1886 2 2.7 9.3%
1887 0 1.1 3.6%
1888 2 3.3 8.0%
1889 2 1.4 5.5%
1890 3 4.7 9.9%
1891 2 2.1 6.9%
1892 3 5.1 8.5%
1893 4 3.6 5.6%
1894 2 4.3 6.2%
1895 4 5.5 7.7%
1896 3 6.4 9.9%
1897 6 5.7 10.0%
1898 3 4.3 8.0%
1899 3 4.0 9.8%
1900 5 5.0 10.1%
1901 6 5.6 9.6%
1902 2 4.8 10.0%
1903 1 3.4 6.5%
1904 3 4.2 7.5%
1905 5 5.2 8.4%
1906 7 5.8 9.3%
1907 3 3.9 6.3%
1908 2 4.7 7.2%
1909 5 5.0 9.0%
1910 2 4.1 7.0%
1911 4 4.6 7.2%
1912 7 5.1 7.8%
1913 11 8.1 12.1%
1914 4 4.6 6.8%
1915 9 7.4 11.1%
1916 12 9.6 12.5%
1917 6 5.9 8.5%
1918 9 8.5 11.0%
1919 12 9.3 13.3%
1920 13 10.1 15.5%
1921 14 15.3 13.8%
1922 15 13.3 9.4%
1923 21 17.2 12.8%
1924 15 13.9 12.1%
1925 12 12.6 10.6%
1926 13 14.6 11.8%
1927 13 12.8 10.3%
1928 15 12.9 9.7%
1929 10 8.8 7.4%
1930 8 6.8 6.4%
1931 15 10.7 10.5%
1932 10 8.9 7.3%
1933 4 7.4 6.5%
1934 7 11.1 5.8%
1935 14 14.2 8.6%
1936 12 13.1 7.0%
1937 11 13.3 7.8%
1938 18 18.5 9.3%
1939 28 24.1 11.8%
1940 23 22.8 11.0%
1941 30 24.6 11.5%
1942 36 29.3 14.0%
1943 38 31.7 15.5%
1944 36 26.6 14.2%
1945 39 29.0 14.9%
1946 39 31.4 14.0%
1947 39 28.4 12.4%
1948 42 36.0 14.0%
1949 49 33.5 12.3%
1950 29 25.0 9.1%
1951 30 29.0 9.2%
1952 38 32.6 10.3%
1953 37 31.0 9.6%
1954 35 32.7 9.7%
1955 41 33.6 9.6%
1956 32 33.0 9.4%
1957 37 32.0 9.2%
1958 38 33.6 9.1%
1959 27 28.7 7.9%
1960 28 28.4 8.3%
1961 27 28.2 7.3%
1962 28 27.3 7.4%
1963 32 28.3 7.5%
1964 33 30.4 8.0%
1965 25 25.0 6.3%
1966 35 31.9 8.4%
1967 31 29.3 7.1%
1968 33 29.7 7.5%
1969 30 31.0 7.3%
1970 25 27.9 6.4%
1971 26 32.5 7.1%
1972 39 39.4 8.8%
1973 47 40.4 9.2%
1974 41 39.8 9.9%
1975 41 41.6 10.5%
1976 38 35.5 9.0%
1977 48 42.7 11.4%
1978 35 35.5 9.1%
1979 39 36.5 9.7%
1980 43 37.9 10.1%
1981 38 36.6 9.8%
1982 26 28.2 7.2%
1983 42 39.9 10.2%
1984 26 28.0 7.2%
1985 39 42.0 9.9%
1986 23 29.1 7.3%
1987 33 30.1 7.8%
1988 25 29.0 7.4%
1989 40 37.3 9.7%
1990 36 33.7 8.9%
1991 34 31.5 8.5%
1992 25 27.4 7.6%
1993 13 18.0 4.8%
1994 30 30.7 8.4%
1995 27 27.5 8.0%
1996 17 18.5 4.8%
1997 15 20.6 5.1%
1998 22 24.1 7.3%
1999 21 23.1 5.8%
2000 28 28.8 6.3%
2001 28 28.1 7.2%
2002 16 20.3 5.5%
2003 24 28.4 6.4%
2004 33 27.9 6.9%
2005 27 26.1 5.9%
2006 19 22.2 5.5%
2007 21 23.0 5.4%
2008 20 26.5 6.1%
2009 22 25.0 5.7%
2010 18 22.6 4.9%
2011 20 22.9 5.0%
2012 15 21.5 5.1%
2013 25 28.6 6.4%

Weighted Frequency of Categories in Each Year

Table C.2: Weighted frequency by year for six larger topics.
Year Ethics History of Philosophy Logic and Mathematics Philosophy of Mind Philosophy of Science Social and Political
1876 9.9% 20.0% 7.3% 24.7% 11.8% 6.0%
1877 14.9% 20.2% 7.0% 23.7% 4.7% 6.2%
1878 10.7% 11.4% 12.3% 27.5% 6.4% 10.2%
1879 8.3% 19.0% 8.8% 23.9% 10.9% 8.7%
1880 15.8% 11.1% 6.9% 22.5% 9.5% 12.8%
1881 8.6% 10.8% 5.1% 35.0% 6.4% 9.6%
1882 12.1% 10.7% 7.5% 28.9% 7.9% 7.9%
1883 13.5% 16.8% 11.9% 25.9% 4.4% 9.4%
1884 8.8% 8.2% 2.8% 36.5% 11.8% 9.0%
1885 9.2% 6.3% 4.5% 39.9% 7.1% 9.0%
1886 7.2% 10.7% 3.2% 29.2% 12.0% 9.3%
1887 5.4% 14.9% 7.3% 38.8% 9.3% 3.6%
1888 7.2% 12.9% 6.5% 33.2% 8.1% 8.0%
1889 5.0% 5.0% 4.2% 49.7% 6.7% 5.5%
1890 8.9% 8.4% 5.2% 33.1% 7.6% 9.9%
1891 7.7% 10.5% 5.1% 35.0% 8.5% 6.9%
1892 6.9% 6.5% 8.2% 34.3% 8.2% 8.5%
1893 4.8% 11.4% 6.7% 25.9% 10.9% 5.6%
1894 8.4% 8.5% 8.5% 29.8% 5.7% 6.2%
1895 8.6% 9.4% 7.6% 29.2% 7.0% 7.7%
1896 9.9% 11.3% 6.7% 20.6% 7.6% 9.9%
1897 11.6% 9.4% 7.9% 26.4% 5.8% 10.0%
1898 7.5% 14.0% 7.0% 25.2% 8.1% 8.0%
1899 5.8% 16.6% 7.1% 20.8% 6.9% 9.8%
1900 8.4% 11.2% 8.9% 21.8% 10.1% 10.1%
1901 6.2% 9.5% 3.9% 25.5% 7.6% 9.6%
1902 11.4% 11.1% 8.4% 17.8% 7.0% 10.0%
1903 5.3% 11.1% 9.3% 21.1% 7.7% 6.5%
1904 7.2% 13.3% 7.2% 25.8% 7.9% 7.5%
1905 5.7% 11.8% 16.2% 16.8% 7.4% 8.4%
1906 6.0% 12.4% 8.3% 23.3% 7.9% 9.3%
1907 6.6% 10.4% 9.5% 21.4% 6.0% 6.3%
1908 8.9% 16.1% 13.4% 17.3% 4.5% 7.2%
1909 5.2% 15.4% 6.0% 18.3% 5.2% 9.0%
1910 4.4% 11.7% 14.6% 21.0% 6.9% 7.0%
1911 6.6% 11.4% 11.3% 23.1% 6.5% 7.2%
1912 5.2% 12.0% 14.6% 18.3% 7.4% 7.8%
1913 5.4% 11.0% 11.2% 19.0% 8.3% 12.1%
1914 6.0% 12.0% 17.1% 19.2% 7.6% 6.8%
1915 7.2% 14.3% 12.3% 18.5% 5.8% 11.1%
1916 6.3% 17.1% 10.3% 15.3% 5.3% 12.5%
1917 7.5% 13.3% 12.1% 19.2% 9.3% 8.5%
1918 6.6% 9.6% 11.6% 20.5% 10.8% 11.0%
1919 4.8% 7.8% 8.6% 23.0% 7.9% 13.3%
1920 5.4% 10.4% 7.0% 20.4% 7.1% 15.5%
1921 7.5% 10.9% 7.5% 19.7% 15.9% 13.8%
1922 5.0% 9.2% 9.3% 21.9% 14.5% 9.4%
1923 6.4% 11.3% 9.6% 18.1% 11.4% 12.8%
1924 5.0% 11.7% 8.3% 18.9% 12.3% 12.1%
1925 8.8% 14.5% 8.2% 14.9% 11.6% 10.6%
1926 5.7% 13.9% 8.3% 18.9% 11.6% 11.8%
1927 5.5% 12.1% 13.0% 18.1% 13.5% 10.3%
1928 6.7% 14.1% 12.5% 16.6% 11.0% 9.7%
1929 4.8% 12.7% 13.3% 18.0% 12.8% 7.4%
1930 5.6% 17.1% 14.1% 12.7% 15.9% 6.4%
1931 6.8% 12.2% 13.0% 17.5% 11.7% 10.5%
1932 7.6% 14.3% 16.5% 13.8% 11.3% 7.3%
1933 6.0% 10.7% 21.2% 13.7% 9.7% 6.5%
1934 5.6% 8.5% 21.1% 15.8% 15.5% 5.8%
1935 3.9% 10.9% 18.6% 14.5% 17.7% 8.6%
1936 8.0% 11.2% 23.1% 13.2% 13.0% 7.0%
1937 8.8% 13.6% 20.3% 10.8% 14.2% 7.8%
1938 7.7% 11.8% 16.9% 13.3% 14.2% 9.3%
1939 11.0% 13.3% 16.3% 12.9% 14.1% 11.8%
1940 8.7% 14.1% 14.6% 14.2% 14.4% 11.0%
1941 6.9% 14.7% 12.3% 13.3% 17.6% 11.5%
1942 9.3% 13.6% 14.3% 12.7% 13.2% 14.0%
1943 8.5% 15.7% 12.7% 11.9% 14.8% 15.5%
1944 11.8% 9.9% 15.4% 12.6% 12.0% 14.2%
1945 11.1% 10.2% 13.7% 13.3% 17.2% 14.9%
1946 10.3% 11.7% 14.4% 12.0% 16.6% 14.0%
1947 8.8% 13.1% 17.3% 11.6% 16.4% 12.4%
1948 11.6% 9.9% 16.0% 11.0% 14.7% 14.0%
1949 10.8% 11.2% 18.1% 12.1% 12.7% 12.3%
1950 12.5% 9.9% 19.4% 12.8% 13.1% 9.1%
1951 10.8% 11.6% 17.2% 13.2% 14.9% 9.2%
1952 10.6% 10.3% 16.2% 13.5% 14.3% 10.3%
1953 10.2% 12.5% 16.0% 13.3% 15.6% 9.6%
1954 10.8% 11.3% 16.1% 13.5% 15.6% 9.7%
1955 11.8% 10.9% 14.8% 12.9% 15.7% 9.6%
1956 12.7% 10.5% 15.7% 14.3% 13.4% 9.4%
1957 13.7% 8.7% 16.4% 14.0% 13.5% 9.2%
1958 13.7% 8.9% 15.9% 13.1% 12.9% 9.1%
1959 12.4% 10.3% 15.7% 13.8% 16.4% 7.9%
1960 13.8% 8.3% 17.3% 13.3% 14.5% 8.3%
1961 12.7% 7.4% 16.1% 15.3% 14.5% 7.3%
1962 14.0% 8.8% 15.8% 14.4% 13.5% 7.4%
1963 15.1% 8.6% 15.5% 16.8% 12.4% 7.5%
1964 15.4% 8.6% 16.5% 13.9% 13.9% 8.0%
1965 14.5% 7.2% 18.8% 12.5% 15.0% 6.3%
1966 16.0% 6.1% 16.4% 15.5% 16.4% 8.4%
1967 14.6% 6.6% 16.5% 14.5% 14.7% 7.1%
1968 16.8% 6.6% 16.8% 13.5% 13.9% 7.5%
1969 14.0% 6.2% 17.2% 14.3% 14.6% 7.3%
1970 12.5% 6.2% 16.5% 16.2% 14.5% 6.4%
1971 15.3% 5.3% 17.1% 14.7% 14.7% 7.1%
1972 17.8% 6.3% 14.3% 13.6% 15.3% 8.8%
1973 15.5% 5.7% 13.1% 13.9% 16.4% 9.2%
1974 17.4% 6.1% 13.3% 12.5% 15.2% 9.9%
1975 16.8% 6.0% 13.3% 13.6% 15.1% 10.5%
1976 17.4% 8.0% 12.0% 13.4% 16.4% 9.0%
1977 15.9% 7.6% 10.9% 12.8% 17.0% 11.4%
1978 16.9% 5.7% 10.7% 12.1% 19.6% 9.1%
1979 17.4% 6.7% 11.8% 11.6% 15.2% 9.7%
1980 17.1% 6.6% 11.3% 13.3% 15.4% 10.1%
1981 17.4% 5.9% 11.0% 15.0% 17.1% 9.8%
1982 15.2% 7.6% 11.5% 12.7% 17.9% 7.2%
1983 17.3% 6.8% 10.2% 13.4% 16.5% 10.2%
1984 17.0% 5.3% 11.3% 14.9% 16.6% 7.2%
1985 20.0% 6.5% 9.9% 12.2% 15.5% 9.9%
1986 18.4% 4.7% 10.9% 13.8% 17.2% 7.3%
1987 16.0% 5.9% 10.0% 13.3% 17.9% 7.8%
1988 16.1% 6.0% 9.6% 14.7% 18.3% 7.4%
1989 17.2% 4.4% 10.6% 14.9% 19.0% 9.7%
1990 16.0% 6.9% 9.3% 15.5% 18.6% 8.9%
1991 16.6% 5.1% 8.7% 15.5% 18.4% 8.5%
1992 16.1% 4.6% 8.9% 16.5% 18.2% 7.6%
1993 14.2% 5.5% 10.2% 16.8% 21.0% 4.8%
1994 15.7% 3.8% 9.4% 17.1% 21.0% 8.4%
1995 15.7% 4.0% 9.9% 14.7% 20.1% 8.0%
1996 15.7% 3.3% 8.7% 16.3% 23.2% 4.8%
1997 15.7% 3.8% 10.0% 14.8% 21.6% 5.1%
1998 14.8% 4.2% 10.4% 15.1% 18.5% 7.3%
1999 14.3% 4.0% 10.7% 14.7% 23.1% 5.8%
2000 13.9% 4.2% 10.5% 15.0% 22.2% 6.3%
2001 13.5% 4.1% 9.9% 16.2% 22.4% 7.2%
2002 12.2% 4.5% 13.2% 14.0% 22.1% 5.5%
2003 16.4% 3.2% 10.3% 12.9% 25.1% 6.4%
2004 14.7% 4.2% 10.3% 14.0% 23.1% 6.9%
2005 12.9% 3.3% 10.3% 12.5% 23.6% 5.9%
2006 15.1% 4.0% 8.9% 14.3% 20.9% 5.5%
2007 14.8% 4.0% 9.8% 14.5% 21.0% 5.4%
2008 17.8% 3.3% 9.1% 12.9% 22.6% 6.1%
2009 15.3% 3.7% 10.1% 15.7% 19.9% 5.7%
2010 14.9% 3.2% 10.4% 15.2% 19.0% 4.9%
2011 13.8% 3.7% 9.4% 15.1% 22.9% 5.0%
2012 15.2% 3.7% 9.1% 12.8% 20.6% 5.1%
2013 15.9% 4.0% 7.4% 13.2% 22.3% 6.4%
Table C.2: Weighted frequency by year for six smaller topics.
Year Aesthetics Epistemology Idealism Metaphysics Philosophy of Language Philosophy of Religion
1876 0.9% 0.7% 7.9% 9.4% 0.9% 0.6%
1877 1.7% 2.1% 8.6% 6.2% 1.0% 3.7%
1878 4.5% 1.6% 6.0% 6.3% 1.8% 1.3%
1879 1.9% 1.0% 8.2% 4.9% 2.4% 2.1%
1880 2.5% 1.1% 7.0% 6.8% 2.2% 1.8%
1881 2.6% 1.0% 13.0% 3.6% 3.2% 0.9%
1882 0.7% 1.5% 14.7% 4.9% 1.7% 1.4%
1883 0.3% 1.0% 8.6% 2.1% 2.7% 3.4%
1884 2.1% 0.8% 12.9% 4.9% 0.7% 1.4%
1885 1.0% 0.7% 10.1% 8.8% 0.6% 2.8%
1886 0.3% 0.6% 11.6% 12.2% 2.0% 1.7%
1887 1.6% 0.4% 6.6% 9.4% 1.1% 1.5%
1888 0.4% 1.8% 11.8% 7.9% 0.8% 1.4%
1889 0.6% 0.6% 10.5% 9.8% 1.3% 0.9%
1890 3.9% 0.8% 13.9% 4.8% 0.9% 2.7%
1891 4.3% 1.2% 14.2% 3.3% 2.3% 1.2%
1892 3.3% 1.2% 15.5% 4.1% 1.7% 1.5%
1893 2.6% 1.6% 20.5% 5.8% 2.5% 1.7%
1894 1.8% 2.1% 20.5% 4.4% 1.6% 2.5%
1895 2.4% 1.6% 16.2% 5.9% 2.2% 2.4%
1896 1.4% 1.7% 17.1% 8.2% 1.7% 3.9%
1897 1.6% 0.7% 19.2% 3.7% 0.9% 2.8%
1898 0.5% 1.4% 22.4% 3.5% 1.1% 1.2%
1899 1.9% 0.7% 21.5% 6.3% 1.4% 1.2%
1900 2.1% 0.5% 18.2% 5.3% 1.0% 2.3%
1901 3.6% 0.9% 20.8% 9.4% 0.8% 2.2%
1902 0.8% 1.0% 22.1% 6.5% 0.7% 3.1%
1903 2.1% 1.7% 28.3% 3.6% 0.8% 2.5%
1904 1.0% 1.6% 21.6% 4.2% 1.0% 1.8%
1905 1.5% 1.1% 22.5% 3.4% 2.0% 3.3%
1906 0.8% 1.9% 23.2% 4.1% 1.2% 1.5%
1907 0.4% 1.6% 27.1% 6.2% 2.4% 2.1%
1908 0.8% 1.2% 23.3% 5.4% 1.2% 0.7%
1909 1.3% 1.6% 29.1% 5.4% 0.7% 2.8%
1910 2.2% 2.4% 21.7% 4.6% 2.3% 1.2%
1911 0.5% 1.3% 23.0% 4.3% 2.8% 2.0%
1912 1.5% 1.3% 22.4% 6.6% 1.3% 1.8%
1913 0.6% 0.9% 21.0% 8.0% 1.3% 1.3%
1914 0.8% 2.3% 18.5% 6.1% 1.6% 2.0%
1915 1.2% 2.3% 16.7% 5.2% 2.3% 3.1%
1916 0.4% 1.9% 18.3% 6.9% 1.7% 3.9%
1917 0.5% 2.4% 17.8% 6.1% 1.4% 1.8%
1918 1.5% 1.6% 16.2% 4.7% 1.7% 4.2%
1919 1.6% 1.8% 21.9% 4.5% 1.6% 3.2%
1920 3.6% 1.4% 19.0% 4.2% 1.3% 4.8%
1921 2.0% 2.2% 12.0% 4.3% 1.5% 2.6%
1922 2.8% 1.8% 14.5% 7.5% 1.9% 2.1%
1923 2.8% 1.4% 16.6% 5.1% 1.1% 3.3%
1924 1.9% 2.1% 15.5% 5.3% 1.9% 5.1%
1925 3.0% 1.5% 18.4% 4.7% 1.4% 2.4%
1926 3.8% 1.3% 12.3% 7.5% 1.5% 3.5%
1927 0.9% 1.9% 13.4% 5.7% 2.0% 3.7%
1928 4.1% 2.1% 10.8% 5.4% 2.1% 4.9%
1929 3.2% 2.2% 13.6% 5.7% 2.8% 3.4%
1930 2.2% 1.9% 12.0% 7.1% 1.5% 3.6%
1931 3.3% 1.3% 11.2% 7.4% 2.1% 3.1%
1932 1.1% 1.8% 12.2% 9.3% 2.8% 1.9%
1933 3.4% 1.9% 16.2% 3.7% 4.7% 2.2%
1934 1.6% 2.2% 9.8% 7.1% 5.3% 1.7%
1935 4.0% 1.4% 9.0% 6.1% 3.0% 2.2%
1936 1.9% 1.5% 7.7% 5.1% 5.9% 2.3%
1937 1.8% 1.5% 8.2% 5.8% 5.6% 1.6%
1938 3.7% 1.5% 8.9% 4.6% 6.2% 1.8%
1939 2.0% 1.6% 7.1% 3.6% 4.8% 1.4%
1940 3.3% 1.3% 7.4% 4.7% 4.2% 2.0%
1941 3.3% 1.7% 7.3% 6.1% 3.2% 2.1%
1942 3.2% 1.9% 6.6% 5.1% 4.1% 2.1%
1943 3.4% 2.1% 5.6% 3.7% 3.9% 2.2%
1944 4.5% 1.6% 6.5% 4.1% 4.3% 3.1%
1945 2.0% 2.4% 4.5% 3.1% 3.6% 3.9%
1946 2.1% 2.2% 5.8% 4.8% 3.9% 2.3%
1947 2.4% 1.7% 5.8% 4.1% 3.6% 2.6%
1948 3.2% 1.7% 4.8% 4.1% 6.0% 3.3%
1949 2.6% 1.9% 3.8% 4.3% 7.1% 3.1%
1950 2.4% 1.8% 3.1% 5.8% 8.3% 1.8%
1951 2.1% 2.1% 3.7% 5.1% 7.4% 2.6%
1952 3.5% 2.4% 3.2% 6.4% 7.3% 1.9%
1953 2.5% 1.9% 3.0% 5.7% 8.1% 1.5%
1954 1.7% 2.5% 2.9% 5.9% 7.3% 2.6%
1955 3.2% 2.3% 2.8% 6.6% 7.1% 2.2%
1956 2.0% 3.0% 2.7% 4.6% 8.8% 2.7%
1957 2.8% 2.4% 2.5% 5.6% 8.9% 2.2%
1958 3.5% 2.3% 4.0% 5.5% 8.1% 3.1%
1959 3.0% 2.6% 2.4% 4.3% 8.9% 2.3%
1960 2.6% 2.4% 1.7% 6.3% 8.3% 3.2%
1961 3.7% 3.2% 2.0% 5.5% 8.5% 3.9%
1962 2.9% 3.8% 1.8% 5.5% 9.7% 2.3%
1963 2.2% 3.8% 1.5% 6.2% 8.3% 2.1%
1964 2.3% 4.1% 1.2% 5.9% 8.1% 2.3%
1965 2.1% 4.5% 0.9% 6.4% 9.7% 2.0%
1966 1.6% 3.4% 1.1% 6.1% 7.3% 1.8%
1967 2.4% 4.2% 1.1% 6.7% 9.4% 2.2%
1968 2.5% 4.0% 0.9% 6.6% 9.5% 1.5%
1969 2.2% 4.3% 1.1% 7.5% 9.4% 1.9%
1970 2.5% 4.4% 0.9% 8.3% 9.9% 1.5%
1971 2.0% 5.0% 0.8% 7.0% 9.5% 1.6%
1972 2.7% 3.8% 0.7% 6.3% 9.0% 1.4%
1973 2.6% 3.9% 0.5% 9.0% 8.5% 1.7%
1974 1.9% 4.8% 0.9% 7.7% 8.0% 2.4%
1975 2.2% 4.3% 0.6% 6.6% 9.3% 1.7%
1976 1.7% 4.9% 0.7% 7.6% 7.4% 1.6%
1977 1.2% 4.4% 0.8% 7.5% 8.2% 2.3%
1978 2.3% 5.1% 0.5% 8.0% 8.4% 1.7%
1979 1.9% 4.6% 0.8% 9.3% 9.6% 1.4%
1980 1.6% 6.6% 0.9% 8.4% 6.9% 1.6%
1981 1.6% 5.3% 0.7% 8.5% 6.4% 1.5%
1982 1.5% 5.2% 0.7% 9.5% 9.0% 2.0%
1983 2.0% 5.6% 0.7% 7.6% 7.4% 2.4%
1984 1.6% 6.5% 0.5% 8.6% 9.0% 1.5%
1985 1.7% 5.0% 0.6% 9.1% 7.9% 1.4%
1986 1.5% 6.3% 0.4% 11.0% 6.6% 1.8%
1987 1.7% 5.7% 0.7% 11.5% 7.9% 1.5%
1988 1.6% 6.4% 0.6% 10.1% 7.0% 2.3%
1989 1.5% 6.0% 0.6% 8.9% 5.9% 1.5%
1990 1.1% 5.4% 0.7% 9.2% 6.8% 1.6%
1991 1.7% 7.3% 0.7% 9.8% 6.7% 1.0%
1992 0.7% 7.3% 0.8% 10.5% 7.7% 1.1%
1993 1.5% 5.4% 0.5% 10.3% 7.8% 1.9%
1994 0.9% 5.8% 0.7% 9.6% 6.4% 1.2%
1995 1.3% 6.3% 0.5% 9.5% 8.8% 1.0%
1996 1.2% 8.0% 0.5% 8.8% 8.8% 0.7%
1997 1.6% 7.1% 0.5% 9.8% 8.8% 1.1%
1998 0.7% 6.3% 0.4% 11.7% 9.5% 1.2%
1999 1.0% 5.8% 0.3% 11.6% 7.8% 0.9%
2000 1.2% 8.1% 0.4% 10.3% 6.7% 1.3%
2001 1.2% 5.9% 0.5% 10.5% 7.6% 0.9%
2002 1.1% 7.5% 0.5% 10.6% 8.2% 0.9%
2003 1.2% 5.9% 0.4% 11.4% 6.0% 0.8%
2004 0.8% 8.3% 0.5% 9.9% 6.5% 0.8%
2005 1.1% 9.1% 0.4% 11.7% 7.9% 1.3%
2006 1.2% 7.9% 0.3% 13.3% 7.8% 0.9%
2007 0.9% 9.1% 0.3% 10.5% 8.3% 1.5%
2008 1.6% 8.9% 0.4% 8.8% 7.5% 1.1%
2009 1.6% 8.1% 0.3% 11.3% 7.5% 1.0%
2010 1.8% 9.5% 0.3% 12.2% 7.6% 1.2%
2011 1.6% 7.6% 0.4% 11.7% 7.5% 1.4%
2012 2.5% 10.3% 0.2% 11.1% 8.4% 1.0%
2013 2.0% 9.5% 0.4% 9.7% 8.2% 0.9%