Rising Concentration of US Income in the Upper Classes

	United States Pre-Tax Gini Coefficient
1952	0.368
1957	0.351
1962	0.362
1967	0.358
1972	0.359
1977	0.363
1982	0.38
1987	0.393
1992	0.404
1997	0.429
2002	0.434
2007	0.432
2012	0.451

Year

Sources: census.gov