World tables of economic and social indicators, 1950-1992 Economic variables: gross national product, gross domestic product, value added in agriculture, industry, manufacturing, and services, value of imports and exports, private consumption, government consumption, gross national savings, gross domestic savings, government deficit or surplus, net direct foreign investment, repayment of long-term loans, public long-term debt, international reserves. Demographic and social variables: population, total fertility rate, crude birth rate, life expectancy at birth, food production per capita, percentage of labour force in agriculture, percentage of labour force that is female, primary and secondary school enrolment rates.