This map shows the changes in per capita GDP of China, Germany, India, Japan, United Kingdom and United States of America over 308 years, that is from 1700 AD to 2008 AD. All GDP numbers are inflation adjusted to 1990 International Geary-Khamis dollars. Data Source: Tables of the late British Economist Angus Maddison (2010). The per capita GDP over various years and population data can be downloaded in a spreadsheet from here. The per capita GDP data in this chart is also available in hardcopy version here: Maddison A (2007), Contours of the World Economy I-2030AD, Oxford University Press, ISBN 978-0199227204