*Units in thousands.
^oImplementation of new March CPS processing system.
*Data from 1971 to 1979 weighted based on the 1970 decennial census.
**Data from 1980 to 1992 weighted based on the 1980 decennial census.
***Beginning in 1993 CPS data weighted based on the 1990 decennial census.
****Primary families only.
Source: Current Population Survey, Bureau of the Census
Note: The source of annual data is the Current Population Survey March Supplement. The quarterly data source is the monthly Current Population Survey/Housing Vacancy Survey.

*Units in thousands.
^oImplementation of new March CPS processing system.
^*Data from 1971 to 1979 weighted based on the 1970 decennial census.
^**Data from 1980 to 1992 weighted based on the 1980 decennial census.
^***Beginning in 1993 CPS data weighted based on the 1990 decennial census.
Source: Current Population Survey, Bureau of the Census
Note: The source of annual data is the Current Population Survey March Supplement. The quarterly data source is the monthly Current Population Survey/Housing Vacancy Survey.

*Components may not add to totals because of rounding. Units in thousands.
^*Census of Housing 1970.
^**Census of Housing 1980.
^***American Housing Survey estimates are available in odd-numbered years only after 1981.
^****Census of Housing 1990.
^*****Annual Housing Survey estimates through 1981 based on 1970 Census weights; 1983 to 1989 estimates based on 1980 Census weights; 1991 and 1995 estimates based on 1990 Census weights. No reduction in Nation's housing inventory has ever occurred; apparent reductions are due to changes in bases used for weighting sample data.
Sources: Annual Data—Annual or American Housing Surveys; Quarterly Data -- Current Population Series/Housing Vacancy Survey in Current Housing Reports: Housing Vacancies and Homeownership, Bureau of the Census, Department of Commerce

Source: Bureau of the Census, Department of Commerce