| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 1314 | 千吨 | 2026-9 |
| 1989/1990 | 793 | 千吨 | 2026-9 |
| 1988/1989 | 707 | 千吨 | 2026-9 |
| 1987/1988 | 935 | 千吨 | 2026-9 |
| 1986/1987 | 545 | 千吨 | 2026-9 |
| 1985/1986 | 715 | 千吨 | 2026-9 |
| 1984/1985 | 850 | 千吨 | 2026-9 |
| 1983/1984 | 720 | 千吨 | 2026-9 |
| 1982/1983 | 470 | 千吨 | 2026-9 |
| 1981/1982 | 450 | 千吨 | 2026-9 |
| 1980/1981 | 430 | 千吨 | 2026-9 |
| 1979/1980 | 425 | 千吨 | 2026-9 |
| 1978/1979 | 400 | 千吨 | 2026-9 |
| 1977/1978 | 350 | 千吨 | 2026-9 |
| 1976/1977 | 381 | 千吨 | 2026-9 |
| 1975/1976 | 297 | 千吨 | 2026-9 |
| 1974/1975 | 118 | 千吨 | 2026-9 |
| 1973/1974 | 193 | 千吨 | 2026-9 |
| 1972/1973 | 140 | 千吨 | 2026-9 |
| 1971/1972 | 175 | 千吨 | 2026-9 |
| 1970/1971 | 137 | 千吨 | 2026-9 |
| 1969/1970 | 111 | 千吨 | 2026-9 |
| 1968/1969 | 32 | 千吨 | 2026-9 |