Bulgaria - Population pyramid
| Date | 0-14 years % | 15-64 years % | > 64 years % |
|---|---|---|---|
| 1973 | 22.23% | 67.27% | 10.49% |
| 1972 | 22.33% | 67.43% | 10.25% |
| 1971 | 22.50% | 67.49% | 10.00% |
| 1970 | 22.72% | 67.55% | 9.73% |
| 1969 | 22.93% | 67.62% | 9.45% |
| 1968 | 23.08% | 67.71% | 9.21% |
| 1967 | 23.27% | 67.76% | 8.97% |
| 1966 | 23.62% | 67.63% | 8.75% |
| 1965 | 23.95% | 67.51% | 8.54% |
| 1964 | 24.45% | 67.33% | 8.21% |
| 1963 | 24.87% | 67.04% | 8.09% |
| 1962 | 25.29% | 66.80% | 7.91% |
| 1961 | 25.57% | 66.61% | 7.82% |
| 1960 | 25.98% | 66.45% | 7.58% |
| 1959 | 26.16% | 66.39% | 7.44% |