The Ancillary Data portion of the Compendium of Environmental Sustainability
Indicator Collections contains 38 variables (time series data on population and
gross domestic product as well as region codes, land area, and waterbody area)
for 238 countries. The data are taken from the UN Population Division, the
World Bank, the CIA Factbook, and CIESIN's Gridded Population of the World, and
are ... distributed by the Columbia University Center for International Earth
Science Information Network (CIESIN).
The data in comma-separated values (CSV), SPSS (SAV) and Stata (DTA) formats and a data dictionary for all indicators and ancillary variables in Word (DOC), Portable Document Format (PDF), and Microsoft Access (MDB) formats are available from the NASA Socioeconomic Data and Applications Center (SEDAC).