World Development Indicators Variables: I

World Develpment Indicators
Variable List: I

A B C D E F G H I L M N O P Q R S T U V W

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Last Updated on May 28, 1999

Definitions from World Development Indicators CD-ROM

IBRD loans and IDA credits (PPG DOD, current US$)

IBRD loans and IDA credits are extended by the World Bank Group. The International Bank for Reconstruction and Development (IBRD) lends at market rates. Credits from the International Development Association (IDA) are at concessional rates. Data are in cu rrent U.S. dollars. For more information, see Tables: WDI 4.17.

Illiteracy rate, adult female (% of females 15+)

Adult female illiteracy rate is the proportion of female adults aged 15 and above who cannot, with understanding, read and write a short, simple statement on their everyday life. For more information, see Tables: WDI 1.2.

Illiteracy rate, adult male (% of males 15+)

Adult male illiteracy rate is the proportion of male adults aged 15 and above who cannot, with understanding, read and write a short, simple statement on their everyday life. For more information, see Tables: WDI 1.2.

Illiteracy rate, adult total (% of people 15+)

Adult illiteracy rate is the proportion of adults aged 15 and above who cannot, with understanding, read and write a short, simple statement on their everyday life. For more information, see Tables: WDI 1.2.

Immunization, DPT (% of children under 12 months)

Child immunization measures the rate of vaccination coverage of children under one year of age. A child is considered adequately immunized against DPT (diphtheria, pertussis or whooping cough, and tetanus) after receiving two or three doses of vaccine, de pending on the immunization scheme. For more information, see Tables: WDI 2.14.

Immunization, measles (% of children under 12 months)

Child immunization measures the rate of vaccination coverage of children under one year of age. A child is considered adequately immunized against measles after receiving one dose of vaccine. For more information, see Tables: WDI 2.14.

Import duties (% of imports)

Import duties comprise all levies collected on goods at the point of entry into the country. They include levies for revenue purposes or import protection, whether on a specific or ad valorem basis, as long as they are restricted to imported products. Dat a are shown for central government only. For more information, see Tables: WDI 5.5.

Imports of goods and services (% of GDP)

Imports of goods and services represent the value of all goods and other market services provided to the world. Included is the value of merchandise, freight, insurance, travel, and other nonfactor services. Factor and property income (formerly called fac tor services), such as investment income, interest, and labor income, is excluded. For more information, see Tables: WDI 4.8.

Imports of goods and services (annual % growth)

Annual growth rate of imports of goods and services based on constant 1987 local currency. Aggregates are based on constant 1987 U.S. dollars. Imports of goods and services represent the value of all goods and other market services provided to the world. Included is the value of merchandise, freight, insurance, travel, and other nonfactor services. Factor and property income (formerly called factor services), such as investment income, interest, and labor income, is excluded. For more information, see Tab les: WDI 4.8.

Imports of goods and services (BoP, current US$)

Imports of goods and services comprise all transactions between residents of a country and the rest of the world involving a change of ownership of general merchandise, goods sent for processing and repairs, nonmonetary gold, and services. Data are in cur rent U.S. dollars. For more information, see Tables: WDI 4.16.

Imports of goods and services (constant 1987 LCU)

Imports of goods and services (constant 1987 US$)

Imports of goods and services (constant LCU)

Imports of goods and services (current LCU)

Imports of goods and services (current US$)

Imports of goods, services and income (BoP, current US$)

Imports of goods, services and income is the sum of goods (merchandise)imports, imports of services and factor payments. For more information, see Tables: WDI 4.16.

Industry, value added (% of GDP)

Industry corresponds to ISIC divisions 10-45 and includes manufacturing (ISIC divisions 15-37). It comprises value added in mining, manufacturing (also reported as a separate subgroup), construction, electricity, water, and gas. Value added is the net out put of a sector after adding up all outputs and subtracting intermediate inputs. It is calculated without making deductions for depreciation of fabricated assets or depletion and degradation of natural resources. The industrial origin of value added is de termined by the International Standard Industrial Classification (ISIC), revision 2. For more information, see Tables: WDI 4.1 and 4.2.

Industry, value added (annual % growth)

Annual growth rate for industrial value added based on constant 1987 local currency. Aggregates are based on constant 1987 U.S. dollars. Industry corresponds to ISIC divisions 10-45 and includes manufacturing (ISIC divisions 15-37). It comprises value add ed in mining, manufacturing (also reported as a separate subgroup), construction, electricity, water, and gas. Value added is the net output of a sector after adding up all outputs and subtracting intermediate inputs. It is calculated without making deduc tions for depreciation of fabricated assets or depletion and degradation of natural resources. The industrial origin of value added is determined by the International Standard Industrial Classification (ISIC), revision 2. For more information, see Tables: WDI 4.1 and 4.2.

Industry, value added (constant 1987 LCU)

Industry, value added (constant 1987 US$)

Industry, value added (constant LCU)

Industry, value added (current LCU)

Industry, value added (current US$)

Inflation, consumer prices (annual %)

Inflation as measured by the consumer price index reflects the annual percentage change in the cost to the average consumer of acquiring a fixed basket of goods and services. In general, a Laspeyres index formula is used. For more information, see Tables: WDI 4.15.

Inflation, food prices (annual %)

Inflation as measured by the food price index reflects the annual percentage change in the prices of foods used for private consumption in households. Food price indexes are a subindex of the consumer price index. For more information, see Tables: WDI 4.1 5.

Inflation, GDP deflator (annual %)

Inflation as measured by the annual growth rate of the GDP implicit deflator. GDP implicit deflator measures the average annual rate of price change in the economy as a whole for the periods shown. For more information, see Tables: WDI 4.15.

Insurance and financial services (% of service exports)

Insurance and financial services cover various types of insurance provided to nonresidents by resident insurance enterprises and vice versa, and financial intermediary and auxiliary services (except those of insurance enterprises and pension funds) exchan ged between residents and nonresidents. Service exports refer to economic output of intangible commodities that may be produced, transferred, and consumed at the same time. International transactions in services are defined by the IMF's Balance of Payment s Manual (1993), but definitions may nevertheless vary among reporting economies. For more information, see Tables: WDI 4.6.

Insurance and financial services (% of service imports)

Insurance and financial services cover various types of insurance provided to nonresidents by resident insurance enterprises and vice versa, and financial intermediary and auxiliary services (except those of insurance enterprises and pension funds) exchan ged between residents and nonresidents. Services imports refer to economic output of intangible commodities that may be produced, transferred, and consumed at the same time. International transactions in services are defined by the International Monetary Fund's (IMF) Balance of Payments Manual (1993), but definitions may nevertheless vary among reporting economies. For more information, see Tables: WDI 4.7.

Interest payments (% of current revenue)

Interest includes interest payments on government debt--including long-term bonds, long-term loans, and other debt instruments--to both domestic and foreign residents. Data are shown for central government only. For more information, see Tables: WDI 4.12.

Interest payments (% of total expenditure)

Interest payments are payments made to domestic sectors and to nonresidents for the use of borrowed money. (Repayment of principal is shown as a financing item, and commission charges are shown as purchases of services.) Interest payments do not include p ayments by government as guarantor or surety of interest on the defaulted debts of others, which are classified as government lending. Data are shown for central government only. For more information, see Tables: WDI 4.13.

Interest rate spread (lending rate minus deposit rate)

Interest rate spread (lending rate minus LIBOR)

Interest rate spread is the interest rate charged by banks on loans to prime customers minus the interest rate paid by commercial or similar banks for demand, time, or savings deposits. Spread over LIBOR (London Interbank Offer Rate) is the interest r ate charged by banks on loans to prime customers minus LIBOR. LIBOR is the most commonly recognized international interest rate and is quoted in several currencies. The average three-month LIBOR on U.S. dollar deposits is used here. For more information, see Tables: WDI 5.4.

International telecom, outgoing traffic (minutes per subscriber)

Outgoing traffic refers to the telephone traffic, measured in minutes per subscriber, that originated in the country with a destination outside the country. For more information, see Tables: WDI 5.10.

International tourism, expenditures (% of total imports)

International tourism expenditures are expenditures of international outbound visitors in other countries, including payments to foreign carriers for international transport. These may include expenditures by residents traveling abroad as same-day visitor s, except in cases where these are so important as to justify a separate classification. Their share in imports is calculated as a ratio to imports of goods and services. For more information, see Tables: WDI 6.15.

International tourism, expenditures (current US$)

International tourism expenditures are expenditures of international outbound visitors in other countries, including payments to foreign carriers for international transport. These may include expenditures by residents traveling abroad as same-day visitor s, except in cases where these are so important as to justify a separate classification. Data are in current U.S. dollars. For more information, see Tables: WDI 6.15.

International tourism, number of arrivals

International inbound tourists are the number of visitors who travel to a country other than that where they have their usual residence for a period not exceeding 12 months and whose main purpose in visiting is other than an activity remunerated from with in the country visited. For more information, see Tables: WDI 6.15.

International tourism, number of departures

International outbound tourists are the number of departures that people make from their country of usual residence to any other country for any purpose other than a remunerated activity in the country visited. For more information, see Tables: WDI 6.15.

International tourism, receipts (% of total exports)

International tourism receipts are expenditures by international inbound visitors, including payments to national carriers for international transport. These receipts should include any other prepayment made for goods or services received in the destinati on country. They also may include receipts from same-day visitors, except in cases where these are so important as to justify a separate classification. Their share in exports is calculated as a ratio to exports of goods and services. For more information , see Tables: WDI 6.15.

International tourism, receipts (current US$)

International tourism receipts are expenditures by international inbound visitors, including payments to national carriers for international transport. These receipts should include any other prepayment made for goods or services received in the destinati on country. They also may include receipts from same-day visitors, except in cases where these are so important as to justify a separate classification. Data are in current U.S. dollars. For more information, see Tables: WDI 6.15.

Irrigated land (% of crop land)

Irrigated land is the area purposely provided with water, including land irrigated by controlled flooding. Cropland includes land under temporary and permanent crops, temporary meadows, market and kitchen gardens, and land temporarily fallow. For more inf ormation, see Tables: WDI 3.2.

Irrigated land (hectares)

Irrigated land (in hectares) refers to areas purposely provided with water, including land irrigated by controlled flooding. Cropland refers to arable land and land used for permanent crops. For more information, see Tables: WDI 3.2.

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