GINI Index

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This is data from the U.S. Census Bureau on the GINI Index, the most commonly used data for measuring national income equality. Party control of Congress is shown as well, to make apparent how income equality has changed by control of Congress. On the Economic Comparison page, I used the 1947-2014 dataset to ensure comprehensiveness, rather than the 1967-2014 dataset. However, I provide both here in order to be thorough, since at times the datasets differ, not just in the raw numbers (the 1967 dataset's tend to be about .40 higher) but also by proportion as well.

Years where declines in income equality occurred have the numbers colored green. Years where no change occurred, the numbers are black. Years where increases in income equality occurred have the numbers colored red. The years themselves are colored in accordance with the party control of Congress that year, with blue for Democrats, red for Republicans, and black for a split Congress.

1967-2014 Household Dataset

The following is data on income equality, organized by party control of Congress, for the 1967-2014 Household GINI Index of the Census Bureau.[1] The data was not used on the main Economic Comparison page because it was less comprehensive, and I preferred the 1947 dataset on families specifically.[2]

YEAR GINI INDEX
1967 .397
1968 .386
1969 .391
1970 .394
1971 .396
1972 .401
1973 .400
1974 .395
1975 .397
1976 .398
1977 .402
1978 .402
1979 .404
SPLIT CONGRESS AFTER 1980 ELECTIONS
1980 .403
1981 .406
1982 .412
1983 .414
1984 .415
1985 .419
DEMOCRATS CONTROL CONGRESS
1986 .425
1987 .426
1988 .426
1989 .431
1990 .428
1991 <.428
1992 .433
1993 .454
1994 .456
1995 .450
REPUBLICANS CONTROL CONGRESS
1996 .455
1997 .459
1998 .456
1999 .458
2000 .462
2001 .466
SPLIT CONGRESS
2002 .462
2003 .464
REPUBLICANS CONTROL CONGRESS
2004 .466
2005 .469
2006 .470
2007 .463
DEMOCRATS CONTROL CONGRESS
2008 .466
2009 .468
2010 .470
2011 .477
SPLIT CONGRESS AFTER 2010 ELECTIONS
2012 .477
2013 .479
2014 .480

1947-2014 Dataset on Families

This is the main dataset used on the Economic Comparison page, which is more comprehensive in showing data for years 1947-2014.[2] Why the GINI ratios vary from the 1967 dataset I am still not sure.

YEAR GINI INDEX
1947 .376
DEMOCRATS CONTROL CONGRESS
1948 .371
1949 .378
1950 .379
1951 .363
REPUBLICANS CONTROL CONGRESS
1952 .368
1953 .359
DEMOCRATS CONTROL CONGRESS
1954 .371
1955 .363
1956 .358
1957 .351
1958 .354
1959 .361
1960 .364
1961 .374
1962 .362
1963 .362
1964 .361
1965 .356
1966 .349
1967 .358
1968 .348
1969 .349
1970 .353
1971 .355
1972 .359
1973 .356
1974 .355
1975 .357
1976 .358
1977 .363
1978 .363
1979 .365
SPLIT CONGRESS AFTER 1980 ELECTIONS
1980 .365
1981 .369
1982 .380
1983 .382
1984 .383
1985 .389
DEMOCRATS CONTROL CONGRESS
1986 .392
1987 .393
1988 .395
1989 .401
1990 .396
1991 <.397
1992 .404
1993 .429
1994 .426
1995 .421
REPUBLICANS CONTROL CONGRESS
1996 .425
1997 .429
1998 .430
1999 .429
2000 .433
2001 .435
SPLIT CONGRESS
2002 .434
2003 .436
REPUBLICANS CONTROL CONGRESS
2004 .438
2005 .440
2006 .444
2007 .432
DEMOCRATS CONTROL CONGRESS
2008 .438
2009 .443
2010 .440
2011 .450
SPLIT CONGRESS AFTER 2010 ELECTIONS
2012 .451
2013 .452
2014 .452

Sources

  1. United States Census Bureau. "Historical Income Tables: Income Inequality: H4." U.S. Department of Commerce.
  2. 2.0 2.1 United States Census Bureau. "Historical Income Tables: Income Inequality: F4." U.S. Department of Commerce.