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| Total (percent) | Family income (percent) | ||||
|---|---|---|---|---|---|
| Year | Low income | Middle income | High income | ||
| 1972 | 0.33 | 1.55 | 0.45 | 0.39 | |
| 1973 | 0.33 | 1.65 | 0.46 | 0.32 | |
| 1974 | 0.34 | † | † | † | |
| 1975 | 0.32 | 1.57 | 0.43 | 0.38 | |
| 1976 | 0.32 | 1.61 | 0.46 | 0.34 | |
| 1977 | 0.34 | 1.57 | 0.48 | 0.35 | |
| 1978 | 0.34 | 1.69 | 0.48 | 0.40 | |
| 1979 | 0.34 | 1.62 | 0.47 | 0.44 | |
| 1980 | 0.33 | 1.51 | 0.46 | 0.38 | |
| 1981 | 0.33 | 1.50 | 0.45 | 0.41 | |
| 1982 | 0.34 | 1.52 | 0.46 | 0.36 | |
| 1983 | 0.33 | 1.35 | 0.48 | 0.39 | |
| 1984 | 0.33 | 1.49 | 0.45 | 0.37 | |
| 1985 | 0.34 | 1.53 | 0.47 | 0.39 | |
| 1986 | 0.32 | 1.33 | 0.45 | 0.34 | |
| 1987 | 0.30 | 1.29 | 0.45 | 0.27 | |
| 1988 | 0.36 | 1.59 | 0.48 | 0.35 | |
| 1989 | 0.36 | 1.43 | 0.50 | 0.33 | |
| 1990 | 0.34 | 1.39 | 0.45 | 0.33 | |
| 1991 | 0.34 | 1.43 | 0.44 | 0.31 | |
| 1992 | 0.35 | 1.42 | 0.46 | 0.36 | |
| 1993 | 0.36 | 1.57 | 0.46 | 0.35 | |
| 1994 | 0.34 | 1.44 | 0.44 | 0.41 | |
| 1995 | 0.35 | 1.36 | 0.47 | 0.39 | |
| 1996 | 0.34 | 1.34 | 0.46 | 0.41 | |
| 1997 | 0.32 | 1.36 | 0.41 | 0.37 | |
| 1998 | 0.33 | 1.34 | 0.39 | 0.46 | |
| 1999 | 0.33 | 1.26 | 0.44 | 0.40 | |
| 2000 | 0.33 | 1.23 | 0.45 | 0.35 | |
| 2001 | 0.33 | 1.36 | 0.45 | 0.37 | |
| 2002 | 0.27 | 1.05 | 0.36 | 0.34 | |
| 2003 | 0.28 | 1.04 | 0.39 | 0.30 | |
| 2004 | 0.30 | 1.24 | 0.39 | 0.41 | |
| 2005 | 0.27 | 1.06 | 0.36 | 0.30 | |
| 2006 | 0.27 | 1.12 | 0.34 | 0.36 | |
| 2007 | 0.26 | 1.07 | 0.34 | 0.25 | |
| 2008 | 0.26 | 1.05 | 0.31 | 0.37 | |
| † Not applicable. Data for family income are not available for 1974. NOTE: Some of the standard error estimates in this table may differ from those previously published due to changes in the generalized variance parameters developed by the U.S. Census Bureau. SOURCE: U.S. Department of Commerce, Census Bureau, Current Population Survey (CPS), October 1972–2008. |
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