| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1992/1993 | 0 | 千吨 | 2026-9 |
| 1991/1992 | 18.637 | 千吨 | 2026-9 |
| 1990/1991 | 23.499 | 千吨 | 2026-9 |
| 1989/1990 | 13.775 | 千吨 | 2026-9 |
| 1988/1989 | 12.155 | 千吨 | 2026-9 |
| 1987/1988 | 18.637 | 千吨 | 2026-9 |
| 1986/1987 | 18.637 | 千吨 | 2026-9 |
| 1985/1986 | 20.258 | 千吨 | 2026-9 |
| 1984/1985 | 21.068 | 千吨 | 2026-9 |
| 1983/1984 | 29.981 | 千吨 | 2026-9 |
| 1982/1983 | 35.653 | 千吨 | 2026-9 |
| 1981/1982 | 25.93 | 千吨 | 2026-9 |
| 1980/1981 | 15.396 | 千吨 | 2026-9 |
| 1979/1980 | 8.103 | 千吨 | 2026-9 |
| 1978/1979 | 1.621 | 千吨 | 2026-9 |
| 1977/1978 | 0 | 千吨 | 2026-9 |
| 1976/1977 | 5.672 | 千吨 | 2026-9 |
| 1975/1976 | 6.482 | 千吨 | 2026-9 |
| 1974/1975 | 7.293 | 千吨 | 2026-9 |
| 1973/1974 | 8.913 | 千吨 | 2026-9 |
| 1972/1973 | 7.293 | 千吨 | 2026-9 |
| 1971/1972 | 0 | 千吨 | 2026-9 |
| 1970/1971 | 2.431 | 千吨 | 2026-9 |
| 1969/1970 | 4.052 | 千吨 | 2026-9 |