World Development Indicators. The World Bank's principal data source on the global economy. More than 550 time series, 1960-present, on more than 200 countries and 18 country groups, covering demographic, social, economic, financial, natural resources, and environmental indicators.
Indicators of Market Size. Annual report from the Economist Intelligence Unit (EIU), giving market indicators for 60 countries. Available within the Business Source Complete database; search for indicators of market size, leaving the drop-down menu in its default position.
United Nations Statistical Yearbook. Economic, social and environmental statistics for over 200 countries and regions, compiled from UN agencies and other international, national and specialized organizations.
International Comparison from the World Bank. Global Purchasing Power Parity, household consumption, and expenditures per capita.
Population Reference Bureau. Analyses of complex demographic data and research, providing up-to-date population information. Includes the World Population Data Sheet and U.S. Economic and Social Trends. Since 2000.
International Data Base (IDB). US Census compilation of demographic and socioeconomic data for 228 countries and areas of the world.