| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1996 | 700 | 千吨 | 2026-9 |
| 1995 | 750 | 千吨 | 2026-9 |
| 1994 | 730 | 千吨 | 2026-9 |
| 1993 | 700 | 千吨 | 2026-9 |
| 1992 | 720 | 千吨 | 2026-9 |
| 1991 | 680 | 千吨 | 2026-9 |
| 1990 | 680 | 千吨 | 2026-9 |
| 1989 | 664 | 千吨 | 2026-9 |
| 1988 | 650 | 千吨 | 2026-9 |
| 1987 | 671 | 千吨 | 2026-9 |
| 1986 | 611 | 千吨 | 2026-9 |
| 1985 | 600 | 千吨 | 2026-9 |
| 1984 | 610 | 千吨 | 2026-9 |
| 1983 | 571 | 千吨 | 2026-9 |
| 1982 | 534 | 千吨 | 2026-9 |
| 1981 | 513 | 千吨 | 2026-9 |
| 1980 | 481 | 千吨 | 2026-9 |
| 1979 | 497 | 千吨 | 2026-9 |
| 1978 | 492 | 千吨 | 2026-9 |
| 1977 | 523 | 千吨 | 2026-9 |
| 1976 | 514 | 千吨 | 2026-9 |
| 1975 | 520 | 千吨 | 2026-9 |
| 1974 | 498 | 千吨 | 2026-9 |
| 1973 | 540 | 千吨 | 2026-9 |
| 1972 | 533 | 千吨 | 2026-9 |
| 1971 | 537 | 千吨 | 2026-9 |
| 1970 | 572 | 千吨 | 2026-9 |
| 1969 | 558 | 千吨 | 2026-9 |
| 1968 | 515 | 千吨 | 2026-9 |
| 1967 | 497 | 千吨 | 2026-9 |
| 1966 | 843 | 千吨 | 2026-9 |
| 1965 | 716 | 千吨 | 2026-9 |
| 1964 | 0 | 千吨 | 2026-9 |