The following estimates of per capita income of the world was made by Angus Maddison (Emeritus Professor, University of Groningen, 1999) in his article "Poor until 1820." After the fall of the Roman Empire, the West entered a recession that lasted about a millennium. During this period, per capita income of the West was no more than $500 (say in 2000 constant dollar). After the industrial revolution, due to mass production, per capita income began to grow.
GDP Per CapitaGDP Per Capita in 1990 international dollars*
Population in italics in billions;
*NOTE: These estimates draw on material for 1500-1995 in A. Maddison, "Monitoring the World Economy" (1995) and "Chinese Economic Performance in the Long Run" (1998), published by the OECD Develop-ment Center, Paris. The time series for GDP were merged with estimates of 1990 GDP derived by use of purchasing power conversions rather than exchange rates and called here "international dollars." The tentative estimates for years before 1500 were specially prepared for this article. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||