| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1990/1991 | 75.419 | 千吨 | 2026-9 |
| 1989/1990 | 70.439 | 千吨 | 2026-9 |
| 1988/1989 | 64.747 | 千吨 | 2026-9 |
| 1987/1988 | 36.998 | 千吨 | 2026-9 |
| 1986/1987 | 24.903 | 千吨 | 2026-9 |
| 1985/1986 | 7.827 | 千吨 | 2026-9 |
| 1984/1985 | 3.558 | 千吨 | 2026-9 |
| 1983/1984 | 3.558 | 千吨 | 2026-9 |
| 1982/1983 | 4.269 | 千吨 | 2026-9 |
| 1981/1982 | 2.846 | 千吨 | 2026-9 |
| 1980/1981 | 1.423 | 千吨 | 2026-9 |
| 1979/1980 | 1.423 | 千吨 | 2026-9 |
| 1978/1979 | 6.404 | 千吨 | 2026-9 |
| 1977/1978 | 4.269 | 千吨 | 2026-9 |
| 1976/1977 | 6.404 | 千吨 | 2026-9 |
| 1975/1976 | 7.115 | 千吨 | 2026-9 |
| 1974/1975 | 17.076 | 千吨 | 2026-9 |