| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1992/1993 | 19.343 | 千吨 | 2026-9 |
| 1991/1992 | 18.676 | 千吨 | 2026-9 |
| 1990/1991 | 23.345 | 千吨 | 2026-9 |
| 1989/1990 | 21.344 | 千吨 | 2026-9 |
| 1988/1989 | 22.011 | 千吨 | 2026-9 |
| 1987/1988 | 20.677 | 千吨 | 2026-9 |
| 1986/1987 | 20.677 | 千吨 | 2026-9 |
| 1985/1986 | 10.005 | 千吨 | 2026-9 |
| 1984/1985 | 13.34 | 千吨 | 2026-9 |
| 1983/1984 | 44.022 | 千吨 | 2026-9 |
| 1982/1983 | 52.026 | 千吨 | 2026-9 |
| 1981/1982 | 27.347 | 千吨 | 2026-9 |
| 1980/1981 | 30.682 | 千吨 | 2026-9 |
| 1979/1980 | 44.022 | 千吨 | 2026-9 |
| 1978/1979 | 56.695 | 千吨 | 2026-9 |
| 1977/1978 | 50.692 | 千吨 | 2026-9 |
| 1976/1977 | 45.356 | 千吨 | 2026-9 |
| 1975/1976 | 43.355 | 千吨 | 2026-9 |
| 1974/1975 | 45.356 | 千吨 | 2026-9 |
| 1973/1974 | 53.36 | 千吨 | 2026-9 |
| 1972/1973 | 75.371 | 千吨 | 2026-9 |