| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 41.325 | 千吨 | 2026-9 |
| 1989/1990 | 18.637 | 千吨 | 2026-9 |
| 1988/1989 | 49.428 | 千吨 | 2026-9 |
| 1987/1988 | 44.567 | 千吨 | 2026-9 |
| 1986/1987 | 4.862 | 千吨 | 2026-9 |
| 1985/1986 | 12.155 | 千吨 | 2026-9 |
| 1984/1985 | 9.724 | 千吨 | 2026-9 |
| 1983/1984 | 16.206 | 千吨 | 2026-9 |
| 1982/1983 | 32.412 | 千吨 | 2026-9 |
| 1981/1982 | 42.946 | 千吨 | 2026-9 |
| 1980/1981 | 58.342 | 千吨 | 2026-9 |
| 1979/1980 | 12.965 | 千吨 | 2026-9 |
| 1978/1979 | 28.361 | 千吨 | 2026-9 |
| 1977/1978 | 30.791 | 千吨 | 2026-9 |
| 1976/1977 | 7.293 | 千吨 | 2026-9 |
| 1975/1976 | 13.775 | 千吨 | 2026-9 |
| 1974/1975 | 6.482 | 千吨 | 2026-9 |
| 1973/1974 | 4.052 | 千吨 | 2026-9 |
| 1972/1973 | 11.344 | 千吨 | 2026-9 |
| 1971/1972 | 12.155 | 千吨 | 2026-9 |
| 1970/1971 | 6.482 | 千吨 | 2026-9 |
| 1969/1970 | 7.293 | 千吨 | 2026-9 |