| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 331 | 千头 | 2026-9 |
| 1997 | 304 | 千头 | 2026-9 |
| 1996 | 314 | 千头 | 2026-9 |
| 1995 | 297 | 千头 | 2026-9 |
| 1994 | 356 | 千头 | 2026-9 |
| 1993 | 387 | 千头 | 2026-9 |
| 1992 | 450 | 千头 | 2026-9 |
| 1991 | 500 | 千头 | 2026-9 |
| 1990 | 584 | 千头 | 2026-9 |
| 1989 | 616 | 千头 | 2026-9 |
| 1988 | 504 | 千头 | 2026-9 |
| 1987 | 512 | 千头 | 2026-9 |
| 1986 | 651 | 千头 | 2026-9 |
| 1985 | 603 | 千头 | 2026-9 |
| 1984 | 676 | 千头 | 2026-9 |
| 1983 | 676 | 千头 | 2026-9 |
| 1982 | 651 | 千头 | 2026-9 |
| 1981 | 687 | 千头 | 2026-9 |
| 1980 | 688 | 千头 | 2026-9 |
| 1979 | 694 | 千头 | 2026-9 |
| 1978 | 684 | 千头 | 2026-9 |
| 1977 | 686 | 千头 | 2026-9 |
| 1976 | 575 | 千头 | 2026-9 |
| 1975 | 525 | 千头 | 2026-9 |
| 1974 | 0 | 千头 | 2026-9 |
| 1973 | 0 | 千头 | 2026-9 |
| 1972 | 0 | 千头 | 2026-9 |
| 1971 | 0 | 千头 | 2026-9 |
| 1970 | 0 | 千头 | 2026-9 |
| 1969 | 0 | 千头 | 2026-9 |
| 1968 | 0 | 千头 | 2026-9 |
| 1967 | 0 | 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 |