| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 36.998 | 千吨 | 2026-9 |
| 1989/1990 | 38.421 | 千吨 | 2026-9 |
| 1988/1989 | 35.575 | 千吨 | 2026-9 |
| 1987/1988 | 15.653 | 千吨 | 2026-9 |
| 1986/1987 | 6.404 | 千吨 | 2026-9 |
| 1985/1986 | 2.135 | 千吨 | 2026-9 |
| 1984/1985 | 2.846 | 千吨 | 2026-9 |
| 1983/1984 | 3.558 | 千吨 | 2026-9 |
| 1982/1983 | 2.846 | 千吨 | 2026-9 |
| 1981/1982 | 2.846 | 千吨 | 2026-9 |
| 1980/1981 | 3.558 | 千吨 | 2026-9 |
| 1979/1980 | 3.558 | 千吨 | 2026-9 |
| 1978/1979 | 2.135 | 千吨 | 2026-9 |
| 1977/1978 | 4.981 | 千吨 | 2026-9 |
| 1976/1977 | 2.846 | 千吨 | 2026-9 |
| 1975/1976 | 2.135 | 千吨 | 2026-9 |
| 1974/1975 | 4.981 | 千吨 | 2026-9 |
| 1973/1974 | 9.25 | 千吨 | 2026-9 |
| 1972/1973 | 10.673 | 千吨 | 2026-9 |
| 1971/1972 | 7.827 | 千吨 | 2026-9 |
| 1970/1971 | 7.115 | 千吨 | 2026-9 |
| 1969/1970 | 5.692 | 千吨 | 2026-9 |
| 1968/1969 | 7.827 | 千吨 | 2026-9 |
| 1967/1968 | 4.981 | 千吨 | 2026-9 |
| 1966/1967 | 7.115 | 千吨 | 2026-9 |
| 1965/1966 | 4.269 | 千吨 | 2026-9 |
| 1964/1965 | 4.269 | 千吨 | 2026-9 |