| 年度 | 数值 | 单位 | 发布日期 |
| 1996 | 1266 | 千吨 | 2026-9 |
| 1995 | 1191 | 千吨 | 2026-9 |
| 1994 | 1174 | 千吨 | 2026-9 |
| 1993 | 1151 | 千吨 | 2026-9 |
| 1992 | 1074 | 千吨 | 2026-9 |
| 1991 | 1032 | 千吨 | 2026-9 |
| 1990 | 1016 | 千吨 | 2026-9 |
| 1989 | 997 | 千吨 | 2026-9 |
| 1988 | 979 | 千吨 | 2026-9 |
| 1987 | 945 | 千吨 | 2026-9 |
| 1986 | 928 | 千吨 | 2026-9 |
| 1985 | 920 | 千吨 | 2026-9 |
| 1984 | 917 | 千吨 | 2026-9 |
| 1983 | 895 | 千吨 | 2026-9 |
| 1982 | 896 | 千吨 | 2026-9 |
| 1981 | 844 | 千吨 | 2026-9 |
| 1980 | 842 | 千吨 | 2026-9 |
| 1979 | 820 | 千吨 | 2026-9 |
| 1978 | 787 | 千吨 | 2026-9 |
| 1977 | 745 | 千吨 | 2026-9 |
| 1976 | 637 | 千吨 | 2026-9 |
| 1975 | 657 | 千吨 | 2026-9 |
| 1974 | 672 | 千吨 | 2026-9 |
| 1973 | 650 | 千吨 | 2026-9 |
| 1972 | 615 | 千吨 | 2026-9 |
| 1971 | 593 | 千吨 | 2026-9 |
| 1970 | 592 | 千吨 | 2026-9 |
| 1969 | 555 | 千吨 | 2026-9 |
| 1968 | 551 | 千吨 | 2026-9 |
| 1967 | 533 | 千吨 | 2026-9 |
| 1966 | 503 | 千吨 | 2026-9 |
| 1965 | 463 | 千吨 | 2026-9 |
| 1964 | 438 | 千吨 | 2026-9 |