U.S. International Trade Commission. International trade statistics and U.S. tariff data. Available in several classification systems on a monthly, quarterly, annual, or year-to-date basis. Free registration required.
"...find official statistics produced by countries and compiled by United Nations data system, as well as estimates and projections... agriculture, education, energy, industry, labour, national accounts, population and tourism."
More than 2,000 indicators now available for free. Note: "Much of the data comes from the statistical systems of member countries, and the quality of global data depends on how well these national systems perform."