| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1990/1991 | 30.348 | 千吨 | 2026-9 |
| 1989/1990 | 16.86 | 千吨 | 2026-9 |
| 1988/1989 | 39.34 | 千吨 | 2026-9 |
| 1987/1988 | 33.72 | 千吨 | 2026-9 |
| 1986/1987 | 20.232 | 千吨 | 2026-9 |
| 1985/1986 | 12.364 | 千吨 | 2026-9 |
| 1984/1985 | 15.736 | 千吨 | 2026-9 |
| 1983/1984 | 31.472 | 千吨 | 2026-9 |
| 1982/1983 | 48.332 | 千吨 | 2026-9 |
| 1981/1982 | 53.952 | 千吨 | 2026-9 |
| 1980/1981 | 53.952 | 千吨 | 2026-9 |
| 1979/1980 | 67.44 | 千吨 | 2026-9 |
| 1978/1979 | 61.82 | 千吨 | 2026-9 |
| 1977/1978 | 69.688 | 千吨 | 2026-9 |
| 1976/1977 | 71.936 | 千吨 | 2026-9 |
| 1975/1976 | 67.44 | 千吨 | 2026-9 |
| 1974/1975 | 37.092 | 千吨 | 2026-9 |
| 1973/1974 | 22.48 | 千吨 | 2026-9 |
| 1972/1973 | 22.48 | 千吨 | 2026-9 |