統計データ集

サーチエンジンとは関係ないが、
手軽に調べられる、世界統計集
NationMaster
http://www.nationmaster.com/

説明に、
Welcome to NationMaster.com, a massive central data source and a handy way to graphically compare nations. NationMaster is a vast compilation of data from such sources as 種本は、以下の通り。the CIA World Factbook, United Nations, World Health Organization, World Bank, World Resources Institute, UNESCO, UNICEF and OECD. Using the form above, you can generate maps and graphs on all kinds of statistics with ease.