| 年度 | 数值 | 单位 | 发布日期 |
| 1998 | 480 | 千头 | 2026-9 |
| 1997 | 500 | 千头 | 2026-9 |
| 1996 | 630 | 千头 | 2026-9 |
| 1995 | 580 | 千头 | 2026-9 |
| 1994 | 678 | 千头 | 2026-9 |
| 1993 | 666 | 千头 | 2026-9 |
| 1992 | 771 | 千头 | 2026-9 |
| 1991 | 951 | 千头 | 2026-9 |
| 1990 | 1028 | 千头 | 2026-9 |
| 1989 | 1265 | 千头 | 2026-9 |
| 1988 | 1141 | 千头 | 2026-9 |
| 1987 | 1139 | 千头 | 2026-9 |
| 1986 | 1123 | 千头 | 2026-9 |
| 1985 | 1161 | 千头 | 2026-9 |
| 1984 | 1010 | 千头 | 2026-9 |
| 1983 | 1102 | 千头 | 2026-9 |
| 1982 | 1089 | 千头 | 2026-9 |
| 1981 | 1083 | 千头 | 2026-9 |
| 1980 | 991 | 千头 | 2026-9 |
| 1979 | 954 | 千头 | 2026-9 |
| 1978 | 914 | 千头 | 2026-9 |
| 1977 | 960 | 千头 | 2026-9 |
| 1976 | 821 | 千头 | 2026-9 |
| 1975 | 825 | 千头 | 2026-9 |
| 1974 | 893 | 千头 | 2026-9 |
| 1973 | 881 | 千头 | 2026-9 |
| 1972 | 788 | 千头 | 2026-9 |
| 1971 | 682 | 千头 | 2026-9 |
| 1970 | 648 | 千头 | 2026-9 |
| 1969 | 566 | 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 |