University of Maryland
Sociology 441: Stratification 
graph GNP per capita, 1950-2005

Average family income trends:
Median income
Bottom quintile
Top quintile
Individual earnings

Income inequality trends:
Gini index of inequality
Share of bottom quintile
Share of middle quintile
Share of top quintile


Sources: Bureau of Economic Analysis,
  Economic Report of the President,

return to: Sociology 441 home page Sociology 441 list of figures

Last updated November 14, 2002
comments to: Reeve Vanneman.