| 年份 | 美国15至64岁人口占总人口比重 | 日本15至64岁人口占总人口比重 |
|---|---|---|
| 2021 | 65.08% | 58.44% |
| 2020 | 65.27% | 58.50% |
| 2019 | 65.47% | 58.65% |
| 2018 | 65.69% | 58.86% |
| 2017 | 65.88% | 59.13% |
| 2016 | 66.15% | 59.51% |
| 2015 | 66.38% | 60.00% |
| 2014 | 66.44% | 60.68% |
| 2013 | 66.57% | 61.52% |
| 2012 | 66.77% | 62.35% |
| 2011 | 66.99% | 62.91% |
| 2010 | 67.10% | 63.20% |
| 2009 | 67.14% | 63.54% |
| 2008 | 67.19% | 64.03% |
| 2007 | 67.23% | 64.60% |
| 2006 | 67.16% | 65.19% |
| 2005 | 67.03% | 65.75% |
| 2004 | 66.88% | 66.19% |
| 2003 | 66.73% | 66.55% |
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| 2002 | 66.57% | 66.93% |
| 2001 | 66.42% | 67.38% |
| 2000 | 66.26% | 67.82% |
| 1999 | 66.08% | 68.20% |
| 1998 | 65.95% | 68.53% |
| 1997 | 65.84% | 68.87% |
| 1996 | 65.73% | 69.19% |
| 1995 | 65.65% | 69.45% |
| 1994 | 65.66% | 69.63% |
| 1993 | 65.71% | 69.75% |
| 1992 | 65.81% | 69.80% |
| 1991 | 65.99% | 69.81% |
| 1990 | 66.16% | 69.73% |
| 1989 | 66.28% | 69.52% |
| 1988 | 66.49% | 69.21% |
| 1987 | 66.68% | 68.89% |
| 1986 | 66.71% | 68.58% |
| 1985 | 66.66% | 68.33% |
| 1984 | 66.63% | 68.10% |
| 1983 | 66.57% | 67.86% |
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| 1982 | 66.47% | 67.61% |
| 1981 | 66.39% | 67.57% |
| 1980 | 66.25% | 67.60% |
| 1979 | 66.00% | 67.54% |
| 1978 | 65.67% | 67.56% |
| 1977 | 65.31% | 67.66% |
| 1976 | 64.91% | 67.81% |
| 1975 | 64.44% | 68.02% |
| 1974 | 63.95% | 68.28% |
| 1973 | 63.43% | 68.58% |
| 1972 | 62.89% | 68.90% |
| 1971 | 62.37% | 69.16% |
| 1970 | 61.91% | 69.27% |
| 1969 | 61.48% | 69.31% |
| 1968 | 61.01% | 69.29% |
| 1967 | 60.63% | 69.23% |
| 1966 | 60.17% | 68.91% |
| 1965 | 59.87% | 68.40% |
| 1964 | 59.94% | 67.70% |
| 1963 | 59.97% | 66.73% |
| 1962 | 59.88% | 65.71% |
| 1961 | 59.78% | 65.01% |
| 1960 | 59.95% | 64.71% |
| 1959 | 60.33% | 63.37% |