| 年度 | 数值 | 单位 | 发布日期 |
| 1992 | 4810 | 千头 | 2026-9 |
| 1991 | 4503 | 千头 | 2026-9 |
| 1990 | 4149 | 千头 | 2026-9 |
| 1989 | 4000 | 千头 | 2026-9 |
| 1988 | 2870 | 千头 | 2026-9 |
| 1987 | 3928 | 千头 | 2026-9 |
| 1986 | 4053 | 千头 | 2026-9 |
| 1985 | 3845 | 千头 | 2026-9 |
| 1984 | 3717 | 千头 | 2026-9 |
| 1983 | 3722 | 千头 | 2026-9 |
| 1982 | 3581 | 千头 | 2026-9 |
| 1981 | 4000 | 千头 | 2026-9 |
| 1980 | 3736 | 千头 | 2026-9 |
| 1979 | 2830 | 千头 | 2026-9 |
| 1978 | 3278 | 千头 | 2026-9 |
| 1977 | 2867 | 千头 | 2026-9 |
| 1976 | 2750 | 千头 | 2026-9 |
| 1975 | 2570 | 千头 | 2026-9 |
| 1974 | 2683 | 千头 | 2026-9 |
| 1973 | 2728 | 千头 | 2026-9 |
| 1972 | 2927 | 千头 | 2026-9 |
| 1971 | 2995 | 千头 | 2026-9 |
| 1970 | 2950 | 千头 | 2026-9 |
| 1969 | 2873 | 千头 | 2026-9 |
| 1968 | 2808 | 千头 | 2026-9 |
| 1967 | 2912 | 千头 | 2026-9 |
| 1966 | 0 | 千头 | 2026-9 |
| 1965 | 0 | 千头 | 2026-9 |
| 1964 | 0 | 千头 | 2026-9 |
| 1963 | 0 | 千头 | 2026-9 |
| 1962 | 0 | 千头 | 2026-9 |
| 1961 | 0 | 千头 | 2026-9 |
| 1960 | 0 | 千头 | 2026-9 |