| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 755 | 千吨 | 2026-9 |
| 1995 | 738 | 千吨 | 2026-9 |
| 1994 | 750 | 千吨 | 2026-9 |
| 1993 | 752 | 千吨 | 2026-9 |
| 1992 | 690 | 千吨 | 2026-9 |
| 1991 | 695 | 千吨 | 2026-9 |
| 1990 | 735 | 千吨 | 2026-9 |
| 1989 | 675 | 千吨 | 2026-9 |
| 1988 | 652 | 千吨 | 2026-9 |
| 1987 | 628 | 千吨 | 2026-9 |
| 1986 | 643 | 千吨 | 2026-9 |
| 1985 | 646 | 千吨 | 2026-9 |
| 1984 | 664 | 千吨 | 2026-9 |
| 1983 | 677 | 千吨 | 2026-9 |
| 1982 | 684 | 千吨 | 2026-9 |
| 1981 | 714 | 千吨 | 2026-9 |
| 1980 | 713 | 千吨 | 2026-9 |
| 1979 | 684 | 千吨 | 2026-9 |
| 1978 | 705 | 千吨 | 2026-9 |
| 1977 | 741 | 千吨 | 2026-9 |
| 1976 | 695 | 千吨 | 2026-9 |
| 1975 | 725 | 千吨 | 2026-9 |
| 1974 | 713 | 千吨 | 2026-9 |
| 1973 | 681 | 千吨 | 2026-9 |
| 1972 | 575 | 千吨 | 2026-9 |
| 1971 | 567 | 千吨 | 2026-9 |
| 1970 | 570 | 千吨 | 2026-9 |
| 1969 | 565 | 千吨 | 2026-9 |
| 1968 | 561 | 千吨 | 2026-9 |
| 1967 | 564 | 千吨 | 2026-9 |
| 1966 | 523 | 千吨 | 2026-9 |
| 1965 | 474 | 千吨 | 2026-9 |
| 1964 | 425 | 千吨 | 2026-9 |