| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 3270 | 千吨 | 2026-9 |
| 1989/1990 | 2990 | 千吨 | 2026-9 |
| 1988/1989 | 2650 | 千吨 | 2026-9 |
| 1987/1988 | 2756 | 千吨 | 2026-9 |
| 1986/1987 | 2840 | 千吨 | 2026-9 |
| 1985/1986 | 2647 | 千吨 | 2026-9 |
| 1984/1985 | 2252 | 千吨 | 2026-9 |
| 1983/1984 | 2215 | 千吨 | 2026-9 |
| 1982/1983 | 2323 | 千吨 | 2026-9 |
| 1981/1982 | 2400 | 千吨 | 2026-9 |
| 1980/1981 | 2300 | 千吨 | 2026-9 |
| 1979/1980 | 2500 | 千吨 | 2026-9 |
| 1978/1979 | 2177 | 千吨 | 2026-9 |
| 1977/1978 | 2071 | 千吨 | 2026-9 |
| 1976/1977 | 1930 | 千吨 | 2026-9 |
| 1975/1976 | 2089 | 千吨 | 2026-9 |
| 1974/1975 | 1609 | 千吨 | 2026-9 |
| 1973/1974 | 1345 | 千吨 | 2026-9 |
| 1972/1973 | 1038 | 千吨 | 2026-9 |
| 1971/1972 | 1163 | 千吨 | 2026-9 |
| 1970/1971 | 1065 | 千吨 | 2026-9 |
| 1969/1970 | 992 | 千吨 | 2026-9 |
| 1968/1969 | 927 | 千吨 | 2026-9 |
| 1967/1968 | 785 | 千吨 | 2026-9 |
| 1966/1967 | 661 | 千吨 | 2026-9 |
| 1965/1966 | 655 | 千吨 | 2026-9 |
| 1964/1965 | 366 | 千吨 | 2026-9 |