| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1990/1991 | 14.612 | 千吨 | 2026-9 |
| 1989/1990 | 16.86 | 千吨 | 2026-9 |
| 1988/1989 | 13.488 | 千吨 | 2026-9 |
| 1987/1988 | 24.728 | 千吨 | 2026-9 |
| 1986/1987 | 19.108 | 千吨 | 2026-9 |
| 1985/1986 | 24.728 | 千吨 | 2026-9 |
| 1984/1985 | 20.232 | 千吨 | 2026-9 |
| 1983/1984 | 28.1 | 千吨 | 2026-9 |
| 1982/1983 | 53.952 | 千吨 | 2026-9 |
| 1981/1982 | 40.464 | 千吨 | 2026-9 |
| 1980/1981 | 32.596 | 千吨 | 2026-9 |
| 1979/1980 | 66.316 | 千吨 | 2026-9 |
| 1978/1979 | 65.192 | 千吨 | 2026-9 |
| 1977/1978 | 44.96 | 千吨 | 2026-9 |
| 1976/1977 | 68.564 | 千吨 | 2026-9 |
| 1975/1976 | 59.572 | 千吨 | 2026-9 |
| 1974/1975 | 34.844 | 千吨 | 2026-9 |
| 1973/1974 | 22.48 | 千吨 | 2026-9 |
| 1972/1973 | 66.316 | 千吨 | 2026-9 |