| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 216.775 | 千吨 | 2026-9 |
| 1989/1990 | 234.784 | 千吨 | 2026-9 |
| 1988/1989 | 216.108 | 千吨 | 2026-9 |
| 1987/1988 | 187.427 | 千吨 | 2026-9 |
| 1986/1987 | 146.073 | 千吨 | 2026-9 |
| 1985/1986 | 131.399 | 千吨 | 2026-9 |
| 1984/1985 | 107.387 | 千吨 | 2026-9 |
| 1983/1984 | 91.379 | 千吨 | 2026-9 |
| 1982/1983 | 44.689 | 千吨 | 2026-9 |
| 1981/1982 | 84.042 | 千吨 | 2026-9 |
| 1980/1981 | 68.701 | 千吨 | 2026-9 |
| 1979/1980 | 102.051 | 千吨 | 2026-9 |
| 1978/1979 | 67.367 | 千吨 | 2026-9 |
| 1977/1978 | 38.019 | 千吨 | 2026-9 |
| 1976/1977 | 26.68 | 千吨 | 2026-9 |
| 1975/1976 | 20.01 | 千吨 | 2026-9 |
| 1974/1975 | 21.344 | 千吨 | 2026-9 |
| 1973/1974 | 44.689 | 千吨 | 2026-9 |
| 1972/1973 | 41.354 | 千吨 | 2026-9 |
| 1971/1972 | 26.68 | 千吨 | 2026-9 |