| 年度 | 数值 | 单位 | 发布日期 |
| 1998 | 800 | 千头 | 2026-9 |
| 1997 | 750 | 千头 | 2026-9 |
| 1996 | 950 | 千头 | 2026-9 |
| 1995 | 1017 | 千头 | 2026-9 |
| 1994 | 1099 | 千头 | 2026-9 |
| 1993 | 1127 | 千头 | 2026-9 |
| 1992 | 625 | 千头 | 2026-9 |
| 1991 | 900 | 千头 | 2026-9 |
| 1990 | 1100 | 千头 | 2026-9 |
| 1989 | 692 | 千头 | 2026-9 |
| 1988 | 647 | 千头 | 2026-9 |
| 1987 | 888 | 千头 | 2026-9 |
| 1986 | 1055 | 千头 | 2026-9 |
| 1985 | 1166 | 千头 | 2026-9 |
| 1984 | 1370 | 千头 | 2026-9 |
| 1983 | 1455 | 千头 | 2026-9 |
| 1982 | 1556 | 千头 | 2026-9 |
| 1981 | 1430 | 千头 | 2026-9 |
| 1980 | 1416 | 千头 | 2026-9 |
| 1979 | 1304 | 千头 | 2026-9 |
| 1978 | 1440 | 千头 | 2026-9 |
| 1977 | 1284 | 千头 | 2026-9 |
| 1976 | 1650 | 千头 | 2026-9 |
| 1975 | 1708 | 千头 | 2026-9 |
| 1974 | 1808 | 千头 | 2026-9 |
| 1973 | 1767 | 千头 | 2026-9 |
| 1972 | 1824 | 千头 | 2026-9 |
| 1971 | 2114 | 千头 | 2026-9 |
| 1970 | 1950 | 千头 | 2026-9 |
| 1969 | 2250 | 千头 | 2026-9 |
| 1968 | 2250 | 千头 | 2026-9 |
| 1967 | 2200 | 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 |