| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 105.339 | 千吨 | 2026-9 |
| 1989/1990 | 112.632 | 千吨 | 2026-9 |
| 1988/1989 | 103.718 | 千吨 | 2026-9 |
| 1987/1988 | 91.564 | 千吨 | 2026-9 |
| 1986/1987 | 84.271 | 千吨 | 2026-9 |
| 1985/1986 | 84.271 | 千吨 | 2026-9 |
| 1984/1985 | 76.168 | 千吨 | 2026-9 |
| 1983/1984 | 35.653 | 千吨 | 2026-9 |
| 1982/1983 | 37.274 | 千吨 | 2026-9 |
| 1981/1982 | 89.133 | 千吨 | 2026-9 |
| 1980/1981 | 27.55 | 千吨 | 2026-9 |
| 1979/1980 | 3.241 | 千吨 | 2026-9 |
| 1978/1979 | 30.791 | 千吨 | 2026-9 |
| 1977/1978 | 37.274 | 千吨 | 2026-9 |
| 1976/1977 | 18.637 | 千吨 | 2026-9 |
| 1975/1976 | 11.344 | 千吨 | 2026-9 |
| 1974/1975 | 21.068 | 千吨 | 2026-9 |
| 1973/1974 | 21.068 | 千吨 | 2026-9 |
| 1972/1973 | 29.171 | 千吨 | 2026-9 |
| 1971/1972 | 27.55 | 千吨 | 2026-9 |
| 1970/1971 | 36.464 | 千吨 | 2026-9 |
| 1969/1970 | 46.187 | 千吨 | 2026-9 |