| 年度 | 数值 | 单位 | 发布日期 |
| 2004 | 1675 | 千头 | 2026-9 |
| 2003 | 1800 | 千头 | 2026-9 |
| 2002 | 2150 | 千头 | 2026-9 |
| 2001 | 2576 | 千头 | 2026-9 |
| 2000 | 2689 | 千头 | 2026-9 |
| 1999 | 2499 | 千头 | 2026-9 |
| 1998 | 2589 | 千头 | 2026-9 |
| 1997 | 2818 | 千头 | 2026-9 |
| 1996 | 3354 | 千头 | 2026-9 |
| 1995 | 2369 | 千头 | 2026-9 |
| 1994 | 2397 | 千头 | 2026-9 |
| 1993 | 2593 | 千头 | 2026-9 |
| 1992 | 2597 | 千头 | 2026-9 |
| 1991 | 2585 | 千头 | 2026-9 |
| 1990 | 2331 | 千头 | 2026-9 |
| 1989 | 2057 | 千头 | 2026-9 |
| 1988 | 2065 | 千头 | 2026-9 |
| 1987 | 2600 | 千头 | 2026-9 |
| 1986 | 2559 | 千头 | 2026-9 |
| 1985 | 2519 | 千头 | 2026-9 |
| 1984 | 2583 | 千头 | 2026-9 |
| 1983 | 2524 | 千头 | 2026-9 |
| 1982 | 2515 | 千头 | 2026-9 |
| 1981 | 2527 | 千头 | 2026-9 |
| 1980 | 2251 | 千头 | 2026-9 |
| 1979 | 2233 | 千头 | 2026-9 |
| 1978 | 2192 | 千头 | 2026-9 |
| 1977 | 2132 | 千头 | 2026-9 |
| 1976 | 2036 | 千头 | 2026-9 |
| 1975 | 2142 | 千头 | 2026-9 |
| 1974 | 4622 | 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 |