| Year | Number of households (thousands) |
Percent of all house- holds |
Median income | House- holder poverty rate |
Percent with specified level of relative income |
|||
|---|---|---|---|---|---|---|---|---|
| Value | SE | Low | Middle | High | ||||
| 1969 | 26,150 | 41.2 | $41,543 | $146 | 6.2 | 10.3 | 81.4 | 8.3 |
| 1970 | 25,715 | 39.9 | $41,789 | $155 | 6.7 | 10.5 | 80.8 | 8.7 |
| 1971 | 26,133 | 39.2 | $41,646 | $145 | 6.8 | 10.7 | 80.4 | 8.9 |
| 1972 | 25,976 | 38.1 | $44,172 | $173 | 6.2 | 10.8 | 79.9 | 9.3 |
| 1973 | 25,861 | 37.0 | $45,873 | $202 | 5.5 | 10.4 | 80.1 | 9.5 |
| 1974 | 25,853 | 36.3 | $44,778 | $156 | 6.0 | 10.8 | 80.2 | 9.0 |
| 1975 | 25,699 | 35.3 | $43,725 | $195 | 7.2 | 12.1 | 78.5 | 9.4 |
| 1976 | 25,508 | 34.4 | $45,076 | $166 | 6.4 | 11.5 | 79.4 | 9.1 |
| 1977 | 25,280 | 33.2 | $45,928 | $180 | 6.3 | 11.9 | 78.4 | 9.6 |
| 1978 | 25,189 | 32.6 | $47,056 | $209 | 5.9 | 11.6 | 78.7 | 9.6 |
| 1979 | 25,615 | 31.7 | $47,793 | $244 | 6.1 | 11.8 | 78.2 | 10.0 |
| 1980 | 25,671 | 31.2 | $46,123 | $233 | 7.7 | 12.9 | 76.9 | 10.2 |
| 1981 | 25,278 | 30.3 | $45,346 | $262 | 8.7 | 14.0 | 75.8 | 10.2 |
| 1982 | 25,276 | 30.1 | $44,336 | $257 | 9.8 | 15.1 | 73.9 | 11.0 |
| 1983 | 25,216 | 29.6 | $44,264 | $249 | 10.1 | 16.3 | 72.7 | 11.0 |
| 1984 | 25,038 | 28.8 | $46,081 | $295 | 9.4 | 15.4 | 73.3 | 11.2 |
| 1985 | 25,496 | 28.8 | $47,099 | $294 | 8.9 | 15.3 | 72.7 | 12.0 |
| 1986 | 25,571 | 28.6 | $48,817 | $375 | 8.0 | 14.7 | 72.7 | 12.6 |
| 1987 | 25,464 | 27.9 | $50,140 | $294 | 7.7 | 14.8 | 73.0 | 12.3 |
| 1988 | 25,599 | 27.6 | $50,266 | $340 | 7.2 | 14.5 | 73.5 | 12.0 |
| 1989 | 25,476 | 27.3 | $50,613 | $302 | 7.3 | 14.9 | 73.2 | 11.9 |
| 1990 | 25,410 | 26.9 | $49,378 | $281 | 7.8 | 14.8 | 73.0 | 12.2 |
| 1991 | 25,357 | 26.5 | $48,982 | $316 | 8.3 | 15.1 | 72.1 | 12.8 |
| 1992 | 25,907 | 26.9 | $49,368 | $322 | 8.6 | 15.3 | 70.9 | 13.8 |
| 1993 | 26,121 | 26.9 | $49,274 | $331 | 9.0 | 15.1 | 69.1 | 15.8 |
| 1994 | 26,367 | 26.6 | $50,053 | $381 | 8.3 | 14.6 | 69.6 | 15.8 |
| 1995 | 26,034 | 26.1 | $51,476 | $306 | 7.5 | 14.2 | 70.3 | 15.5 |
| 1996 | 26,184 | 25.9 | $51,950 | $344 | 7.5 | 14.2 | 70.8 | 15.1 |
Source: U. S. Bureau of the Census, March Current Population Surveys.