| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 726 | 千吨 | 2026-9 |
| 1995 | 716 | 千吨 | 2026-9 |
| 1994 | 776 | 千吨 | 2026-9 |
| 1993 | 768 | 千吨 | 2026-9 |
| 1992 | 780 | 千吨 | 2026-9 |
| 1991 | 800 | 千吨 | 2026-9 |
| 1990 | 810 | 千吨 | 2026-9 |
| 1989 | 596 | 千吨 | 2026-9 |
| 1988 | 601 | 千吨 | 2026-9 |
| 1987 | 658 | 千吨 | 2026-9 |
| 1986 | 725 | 千吨 | 2026-9 |
| 1985 | 722 | 千吨 | 2026-9 |
| 1984 | 887 | 千吨 | 2026-9 |
| 1983 | 894 | 千吨 | 2026-9 |
| 1982 | 885 | 千吨 | 2026-9 |
| 1981 | 889 | 千吨 | 2026-9 |
| 1980 | 892 | 千吨 | 2026-9 |
| 1979 | 850 | 千吨 | 2026-9 |
| 1978 | 861 | 千吨 | 2026-9 |
| 1977 | 852 | 千吨 | 2026-9 |
| 1976 | 873 | 千吨 | 2026-9 |
| 1975 | 855 | 千吨 | 2026-9 |
| 1974 | 891 | 千吨 | 2026-9 |
| 1973 | 908 | 千吨 | 2026-9 |
| 1972 | 924 | 千吨 | 2026-9 |
| 1971 | 932 | 千吨 | 2026-9 |
| 1970 | 942 | 千吨 | 2026-9 |
| 1969 | 847 | 千吨 | 2026-9 |
| 1968 | 820 | 千吨 | 2026-9 |
| 1967 | 848 | 千吨 | 2026-9 |
| 1966 | 859 | 千吨 | 2026-9 |
| 1965 | 851 | 千吨 | 2026-9 |
| 1964 | 853 | 千吨 | 2026-9 |