| 年份 | 美国儿童(14岁及以下)占总人口比重 | 日本儿童(14岁及以下)占总人口比重 |
|---|---|---|
| 2024 | 17.32% | 11.44% |
| 2023 | 17.59% | 11.65% |
| 2022 | 17.88% | 11.86% |
| 2021 | 18.15% | 12.05% |
| 2020 | 18.39% | 12.22% |
| 2019 | 18.61% | 12.37% |
| 2018 | 18.79% | 12.49% |
| 2017 | 18.94% | 12.61% |
| 2016 | 19.07% | 12.72% |
| 2015 | 19.19% | 12.84% |
| 2014 | 19.31% | 12.97% |
| 2013 | 19.41% | 13.09% |
| 2012 | 19.51% | 13.20% |
| 2011 | 19.60% | 13.29% |
| 2010 | 19.70% | 13.37% |
| 2009 | 19.81% | 13.46% |
| 2008 | 19.91% | 13.53% |
| 2007 | 20.02% | 13.59% |
| 2006 | 20.16% | 13.67% |
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| 2005 | 20.35% | 13.75% |
| 2004 | 20.55% | 13.84% |
| 2003 | 20.73% | 13.95% |
| 2002 | 20.89% | 14.08% |
| 2001 | 21.03% | 14.22% |
| 2000 | 21.16% | 14.38% |
| 1999 | 21.29% | 14.58% |
| 1998 | 21.41% | 14.81% |
| 1997 | 21.55% | 15.06% |
| 1996 | 21.68% | 15.33% |
| 1995 | 21.79% | 15.64% |
| 1994 | 21.87% | 15.99% |
| 1993 | 21.87% | 16.40% |
| 1992 | 21.82% | 16.87% |
| 1991 | 21.71% | 17.40% |
| 1990 | 21.57% | 18.02% |
| 1989 | 21.46% | 18.75% |
| 1988 | 21.35% | 19.54% |
| 1987 | 21.30% | 20.32% |
| 1986 | 21.35% | 21.03% |
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| 1985 | 21.51% | 21.67% |
| 1984 | 21.69% | 22.20% |
| 1983 | 21.84% | 22.64% |
| 1982 | 21.98% | 23.06% |
| 1981 | 22.15% | 23.28% |
| 1980 | 22.40% | 23.43% |
| 1979 | 22.77% | 23.66% |
| 1978 | 23.25% | 23.80% |
| 1977 | 23.80% | 23.86% |
| 1976 | 24.45% | 23.88% |
| 1975 | 25.16% | 23.85% |
| 1974 | 25.89% | 23.75% |
| 1973 | 26.64% | 23.60% |
| 1972 | 27.37% | 23.41% |
| 1971 | 28.02% | 23.26% |
| 1970 | 28.55% | 23.26% |
| 1969 | 29.03% | 23.37% |
| 1968 | 29.52% | 23.54% |
| 1967 | 29.99% | 23.79% |
| 1966 | 30.39% | 24.35% |
| 1965 | 30.70% | 25.09% |
| 1964 | 30.93% | 25.83% |
| 1963 | 31.11% | 26.82% |
| 1962 | 31.29% | 28.00% |
| 1961 | 31.40% | 29.14% |
| 1960 | 31.27% | 29.83% |
| 1959 | 30.59% | 31.09% |