Levels of World Economic Performance, 1500-2005

  1500 1820 1992 2005
World Population (millions) 425 1,068 5,441 6,477
GDP per Capita 565 651 5,145 6,775
World GDP (billion 1990 US$) 240 695 27,995 43,886
World Exports (billion 1990 US $) n.a. 7 3,786 12,588

Source: Angus Maddison, Monitoring the World Economy: 1820-1992 (Paris: Organisation for Economic Cooperation and Development, 1995) p. 19; Population Reference Bureau, 2005 World Population Data Sheet (Washington, DC: Population Reference Bureau, 2006), accessed at http://www.prb.org/pdf05/05WorldDataSheet_Eng.pdf, January 2006; International Monetary Fund, World Economic Database, 2005 (Washington, DC: IMF, September 2005) accessed at http://www.imf.org/external/pubs/ft/weo/2005/, January 2006.