| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 710 | 千吨 | 2026-9 |
| 1989/1990 | 590 | 千吨 | 2026-9 |
| 1988/1989 | 483 | 千吨 | 2026-9 |
| 1987/1988 | 690 | 千吨 | 2026-9 |
| 1986/1987 | 854 | 千吨 | 2026-9 |
| 1985/1986 | 942 | 千吨 | 2026-9 |
| 1984/1985 | 934 | 千吨 | 2026-9 |
| 1983/1984 | 753 | 千吨 | 2026-9 |
| 1982/1983 | 717 | 千吨 | 2026-9 |
| 1981/1982 | 443 | 千吨 | 2026-9 |
| 1980/1981 | 232 | 千吨 | 2026-9 |
| 1979/1980 | 243 | 千吨 | 2026-9 |
| 1978/1979 | 228 | 千吨 | 2026-9 |
| 1977/1978 | 224 | 千吨 | 2026-9 |
| 1976/1977 | 161 | 千吨 | 2026-9 |
| 1975/1976 | 139 | 千吨 | 2026-9 |
| 1974/1975 | 91 | 千吨 | 2026-9 |
| 1973/1974 | 62 | 千吨 | 2026-9 |
| 1972/1973 | 21 | 千吨 | 2026-9 |
| 1971/1972 | 41 | 千吨 | 2026-9 |
| 1970/1971 | 52 | 千吨 | 2026-9 |
| 1969/1970 | 49 | 千吨 | 2026-9 |
| 1968/1969 | 25 | 千吨 | 2026-9 |