Per Capita Gross Domestic Product, Billions of
Dollars (Chained 1996), Logarithmic Plot, Page
U.S. Department of Commerce, Bureau of Economic Analysis,
Data for 1920–1999: Population Estimates Program,
Population Division, U.S. Census Bureau, “Historical
National Population Estimates: July 1, 1900 to July 1, 1999,”
data for 2000–2004: http://www.census.gov/popest/states/tables/NST-EST2004-01.pdf.