États-Unis - Pyramide des âges
| Date | 0-14 ans % | 15-64 ans % | > 64 ans % |
|---|---|---|---|
| 1972 | 27,13% | 62,89% | 9,98% |
| 1971 | 27,75% | 62,37% | 9,88% |
| 1970 | 28,28% | 61,91% | 9,80% |
| 1969 | 28,79% | 61,48% | 9,74% |
| 1968 | 29,28% | 61,01% | 9,71% |
| 1967 | 29,72% | 60,63% | 9,65% |
| 1966 | 30,25% | 60,17% | 9,58% |
| 1965 | 30,58% | 59,87% | 9,55% |
| 1964 | 30,54% | 59,94% | 9,52% |
| 1963 | 30,57% | 59,97% | 9,45% |
| 1962 | 30,75% | 59,88% | 9,38% |
| 1961 | 30,91% | 59,78% | 9,31% |
| 1960 | 30,82% | 59,95% | 9,23% |