| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 249.025 | 千吨 | 2026-9 |
| 1989/1990 | 256.14 | 千吨 | 2026-9 |
| 1988/1989 | 248.314 | 千吨 | 2026-9 |
| 1987/1988 | 211.316 | 千吨 | 2026-9 |
| 1986/1987 | 209.893 | 千吨 | 2026-9 |
| 1985/1986 | 173.606 | 千吨 | 2026-9 |
| 1984/1985 | 123.09 | 千吨 | 2026-9 |
| 1983/1984 | 103.879 | 千吨 | 2026-9 |
| 1982/1983 | 102.456 | 千吨 | 2026-9 |
| 1981/1982 | 83.246 | 千吨 | 2026-9 |
| 1980/1981 | 84.669 | 千吨 | 2026-9 |
| 1979/1980 | 84.669 | 千吨 | 2026-9 |
| 1978/1979 | 82.534 | 千吨 | 2026-9 |
| 1977/1978 | 54.786 | 千吨 | 2026-9 |
| 1976/1977 | 48.382 | 千吨 | 2026-9 |
| 1975/1976 | 44.113 | 千吨 | 2026-9 |
| 1974/1975 | 36.998 | 千吨 | 2026-9 |
| 1973/1974 | 39.133 | 千吨 | 2026-9 |
| 1972/1973 | 17.076 | 千吨 | 2026-9 |
| 1971/1972 | 33.441 | 千吨 | 2026-9 |
| 1970/1971 | 17.788 | 千吨 | 2026-9 |
| 1969/1970 | 9.25 | 千吨 | 2026-9 |
| 1968/1969 | 12.096 | 千吨 | 2026-9 |
| 1967/1968 | 9.25 | 千吨 | 2026-9 |
| 1966/1967 | 8.538 | 千吨 | 2026-9 |
| 1965/1966 | 10.673 | 千吨 | 2026-9 |
| 1964/1965 | 12.096 | 千吨 | 2026-9 |