美国房价，收入历史数据

National median income and house price

income house price ratio
1967 7000 22200 3.171428571
1968 7600 26500 3.486842105
1969 8300 25100 3.024096386
1970 8600 22300 2.593023256
1971 8900 25300 2.842696629
1972 10400 29700 2.855769231
1973 11200 35700 3.1875
1974 11700 37400 3.196581197
1975 12700 42100 3.31496063
1976 13600 45900 3.375
1977 15000 52700 3.513333333
1978 16400 59900 3.652439024
1979 17800 61500 3.45505618
1980 19100 67000 3.507853403
1981 20100 68400 3.402985075
1982 21100 71700 3.398104265
1983 22500 75900 3.373333333
1984 23700 78300 3.303797468
1985 24900 87900 3.530120482
1986 26000 95000 3.653846154
1987 27200 111800 4.110294118
1988 28900 121000 4.186851211
1989 29700 125200 4.215488215
1990 30100 127000 4.219269103
1991 30100 122000 4.053156146
1992 30600 126000 4.117647059
1993 31200 125000 4.006410256
1994 32300 135000 4.179566563
1995 34100 138600 4.064516129
1996 35400 144900 4.093220339
1997 37100 145900 3.932614555
1998 38900 152500 3.920308483
1999 40800 164800 4.039215686
2000 42200 162000 3.838862559
2001 42300 180200 4.260047281
2002 42600 197600 4.638497653