| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998 | 407 | 千吨 | 2026-9 |
| 1997 | 404 | 千吨 | 2026-9 |
| 1996 | 396 | 千吨 | 2026-9 |
| 1995 | 400 | 千吨 | 2026-9 |
| 1994 | 405 | 千吨 | 2026-9 |
| 1993 | 462 | 千吨 | 2026-9 |
| 1992 | 634 | 千吨 | 2026-9 |
| 1991 | 770 | 千吨 | 2026-9 |
| 1990 | 838 | 千吨 | 2026-9 |
| 1989 | 729 | 千吨 | 2026-9 |
| 1988 | 783 | 千吨 | 2026-9 |
| 1987 | 835 | 千吨 | 2026-9 |
| 1986 | 854 | 千吨 | 2026-9 |
| 1985 | 826 | 千吨 | 2026-9 |
| 1984 | 787 | 千吨 | 2026-9 |
| 1983 | 738 | 千吨 | 2026-9 |
| 1982 | 775 | 千吨 | 2026-9 |
| 1981 | 600 | 千吨 | 2026-9 |
| 1980 | 780 | 千吨 | 2026-9 |
| 1979 | 842 | 千吨 | 2026-9 |
| 1978 | 802 | 千吨 | 2026-9 |
| 1977 | 818 | 千吨 | 2026-9 |
| 1976 | 893 | 千吨 | 2026-9 |
| 1975 | 823 | 千吨 | 2026-9 |
| 1974 | 742 | 千吨 | 2026-9 |
| 1973 | 575 | 千吨 | 2026-9 |
| 1972 | 500 | 千吨 | 2026-9 |
| 1971 | 520 | 千吨 | 2026-9 |
| 1970 | 549 | 千吨 | 2026-9 |
| 1969 | 566 | 千吨 | 2026-9 |
| 1968 | 531 | 千吨 | 2026-9 |
| 1967 | 488 | 千吨 | 2026-9 |
| 1966 | 421 | 千吨 | 2026-9 |
| 1965 | 411 | 千吨 | 2026-9 |
| 1964 | 444 | 千吨 | 2026-9 |
| 1963 | 429 | 千吨 | 2026-9 |
| 1962 | 380 | 千吨 | 2026-9 |
| 1961 | 328 | 千吨 | 2026-9 |
| 1960 | 317 | 千吨 | 2026-9 |