| 年度 | 数值 | 单位 | 发布日期 |
| 1998 | 984 | 千头 | 2026-9 |
| 1997 | 799 | 千头 | 2026-9 |
| 1996 | 791 | 千头 | 2026-9 |
| 1995 | 817 | 千头 | 2026-9 |
| 1994 | 794 | 千头 | 2026-9 |
| 1993 | 819 | 千头 | 2026-9 |
| 1992 | 1502 | 千头 | 2026-9 |
| 1991 | 1521 | 千头 | 2026-9 |
| 1990 | 2025 | 千头 | 2026-9 |
| 1989 | 1413 | 千头 | 2026-9 |
| 1988 | 1547 | 千头 | 2026-9 |
| 1987 | 1543 | 千头 | 2026-9 |
| 1986 | 1350 | 千头 | 2026-9 |
| 1985 | 1582 | 千头 | 2026-9 |
| 1984 | 1416 | 千头 | 2026-9 |
| 1983 | 1508 | 千头 | 2026-9 |
| 1982 | 1500 | 千头 | 2026-9 |
| 1981 | 1875 | 千头 | 2026-9 |
| 1980 | 1856 | 千头 | 2026-9 |
| 1979 | 1994 | 千头 | 2026-9 |
| 1978 | 1762 | 千头 | 2026-9 |
| 1977 | 1774 | 千头 | 2026-9 |
| 1976 | 1630 | 千头 | 2026-9 |
| 1975 | 1510 | 千头 | 2026-9 |
| 1974 | 1437 | 千头 | 2026-9 |
| 1973 | 1455 | 千头 | 2026-9 |
| 1972 | 1230 | 千头 | 2026-9 |
| 1971 | 1195 | 千头 | 2026-9 |
| 1970 | 1255 | 千头 | 2026-9 |
| 1969 | 1250 | 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 |