| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 915 | 千吨 | 2026-9 |
| 1995 | 880 | 千吨 | 2026-9 |
| 1994 | 868 | 千吨 | 2026-9 |
| 1993 | 825 | 千吨 | 2026-9 |
| 1992 | 854 | 千吨 | 2026-9 |
| 1991 | 858 | 千吨 | 2026-9 |
| 1990 | 820 | 千吨 | 2026-9 |
| 1989 | 828 | 千吨 | 2026-9 |
| 1988 | 802 | 千吨 | 2026-9 |
| 1987 | 766 | 千吨 | 2026-9 |
| 1986 | 718 | 千吨 | 2026-9 |
| 1985 | 755 | 千吨 | 2026-9 |
| 1984 | 738 | 千吨 | 2026-9 |
| 1983 | 756 | 千吨 | 2026-9 |
| 1982 | 798 | 千吨 | 2026-9 |
| 1981 | 825 | 千吨 | 2026-9 |
| 1980 | 703 | 千吨 | 2026-9 |
| 1979 | 691 | 千吨 | 2026-9 |
| 1978 | 694 | 千吨 | 2026-9 |
| 1977 | 658 | 千吨 | 2026-9 |
| 1976 | 621 | 千吨 | 2026-9 |
| 1975 | 569 | 千吨 | 2026-9 |
| 1974 | 587 | 千吨 | 2026-9 |
| 1973 | 532 | 千吨 | 2026-9 |
| 1972 | 493 | 千吨 | 2026-9 |
| 1971 | 411 | 千吨 | 2026-9 |
| 1970 | 429 | 千吨 | 2026-9 |
| 1969 | 319 | 千吨 | 2026-9 |
| 1968 | 286 | 千吨 | 2026-9 |
| 1967 | 289 | 千吨 | 2026-9 |
| 1966 | 248 | 千吨 | 2026-9 |
| 1965 | 182 | 千吨 | 2026-9 |
| 1964 | 158 | 千吨 | 2026-9 |