| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1987/1988 | 0 | 千吨 | 2026-9 |
| 1986/1987 | 0 | 千吨 | 2026-9 |
| 1983/1984 | 5.692 | 千吨 | 2026-9 |
| 1982/1983 | 7.115 | 千吨 | 2026-9 |
| 1981/1982 | 10.673 | 千吨 | 2026-9 |
| 1980/1981 | 21.345 | 千吨 | 2026-9 |
| 1979/1980 | 13.519 | 千吨 | 2026-9 |
| 1978/1979 | 4.269 | 千吨 | 2026-9 |
| 1977/1978 | 15.653 | 千吨 | 2026-9 |
| 1976/1977 | 19.211 | 千吨 | 2026-9 |
| 1975/1976 | 4.269 | 千吨 | 2026-9 |
| 1974/1975 | 20.634 | 千吨 | 2026-9 |
| 1973/1974 | 0.712 | 千吨 | 2026-9 |
| 1972/1973 | 2.846 | 千吨 | 2026-9 |
| 1971/1972 | 2.846 | 千吨 | 2026-9 |
| 1970/1971 | 0.712 | 千吨 | 2026-9 |
| 1969/1970 | 4.981 | 千吨 | 2026-9 |
| 1968/1969 | 0.712 | 千吨 | 2026-9 |
| 1967/1968 | 0.712 | 千吨 | 2026-9 |
| 1966/1967 | 9.25 | 千吨 | 2026-9 |
| 1965/1966 | 4.981 | 千吨 | 2026-9 |
| 1964/1965 | 4.269 | 千吨 | 2026-9 |