| 年份 | 美国15至64岁人口占总人口比重 |
|---|---|
| 2021 | 65.08% |
| 2020 | 65.27% |
| 2019 | 65.47% |
| 2018 | 65.69% |
| 2017 | 65.88% |
| 2016 | 66.15% |
| 2015 | 66.38% |
| 2014 | 66.44% |
| 2013 | 66.57% |
| 2012 | 66.77% |
| 2011 | 66.99% |
| 2010 | 67.10% |
| 2009 | 67.14% |
| 2008 | 67.19% |
| 2007 | 67.23% |
| 2006 | 67.16% |
| 2005 | 67.03% |
| 2004 | 66.88% |
| 2003 | 66.73% |
|
|
|
| 2002 | 66.57% |
| 2001 | 66.42% |
| 2000 | 66.26% |
| 1999 | 66.08% |
| 1998 | 65.95% |
| 1997 | 65.84% |
| 1996 | 65.73% |
| 1995 | 65.65% |
| 1994 | 65.66% |
| 1993 | 65.71% |
| 1992 | 65.81% |
| 1991 | 65.99% |
| 1990 | 66.16% |
| 1989 | 66.28% |
| 1988 | 66.49% |
| 1987 | 66.68% |
| 1986 | 66.71% |
| 1985 | 66.66% |
| 1984 | 66.63% |
| 1983 | 66.57% |
|
|
|
| 1982 | 66.47% |
| 1981 | 66.39% |
| 1980 | 66.25% |
| 1979 | 66.00% |
| 1978 | 65.67% |
| 1977 | 65.31% |
| 1976 | 64.91% |
| 1975 | 64.44% |
| 1974 | 63.95% |
| 1973 | 63.43% |
| 1972 | 62.89% |
| 1971 | 62.37% |
| 1970 | 61.91% |
| 1969 | 61.48% |
| 1968 | 61.01% |
| 1967 | 60.63% |
| 1966 | 60.17% |
| 1965 | 59.87% |
| 1964 | 59.94% |
| 1963 | 59.97% |
| 1962 | 59.88% |
| 1961 | 59.78% |
| 1960 | 59.95% |
| 1959 | 60.33% |