| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 1130 | 千吨 | 2026-9 |
| 1995 | 1070 | 千吨 | 2026-9 |
| 1994 | 1060 | 千吨 | 2026-9 |
| 1993 | 1040 | 千吨 | 2026-9 |
| 1992 | 991 | 千吨 | 2026-9 |
| 1991 | 951 | 千吨 | 2026-9 |
| 1990 | 948 | 千吨 | 2026-9 |
| 1989 | 933 | 千吨 | 2026-9 |
| 1988 | 920 | 千吨 | 2026-9 |
| 1987 | 890 | 千吨 | 2026-9 |
| 1986 | 880 | 千吨 | 2026-9 |
| 1985 | 870 | 千吨 | 2026-9 |
| 1984 | 875 | 千吨 | 2026-9 |
| 1983 | 860 | 千吨 | 2026-9 |
| 1982 | 860 | 千吨 | 2026-9 |
| 1981 | 806 | 千吨 | 2026-9 |
| 1980 | 809 | 千吨 | 2026-9 |
| 1979 | 786 | 千吨 | 2026-9 |
| 1978 | 763 | 千吨 | 2026-9 |
| 1977 | 720 | 千吨 | 2026-9 |
| 1976 | 610 | 千吨 | 2026-9 |
| 1975 | 630 | 千吨 | 2026-9 |
| 1974 | 645 | 千吨 | 2026-9 |
| 1973 | 628 | 千吨 | 2026-9 |
| 1972 | 590 | 千吨 | 2026-9 |
| 1971 | 570 | 千吨 | 2026-9 |
| 1970 | 569 | 千吨 | 2026-9 |
| 1969 | 530 | 千吨 | 2026-9 |
| 1968 | 526 | 千吨 | 2026-9 |
| 1967 | 510 | 千吨 | 2026-9 |
| 1966 | 482 | 千吨 | 2026-9 |
| 1965 | 441 | 千吨 | 2026-9 |
| 1964 | 415 | 千吨 | 2026-9 |