HOUSES BUILT IN THE USA 1900-2000
  decade number millions %
pre 1920 8,989 6.8%
1920-299 5,323 4.0%
1930-399 5,536 4.2%
1940-499 7,836 5.9%
1950-599 13,455 10.2%
1960-699 15,405 11.7%
1970-799 24,935 18.9%
1980-899 16,729 12.7%
1990-999 16,154 12.2%
  2000-09 17,517   13.3%
131,879 100 percent 1

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