| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 286.846 | 千吨 | 2026-9 |
| 1989/1990 | 277.933 | 千吨 | 2026-9 |
| 1988/1989 | 315.207 | 千吨 | 2026-9 |
| 1987/1988 | 247.142 | 千吨 | 2026-9 |
| 1986/1987 | 281.174 | 千吨 | 2026-9 |
| 1985/1986 | 257.675 | 千吨 | 2026-9 |
| 1984/1985 | 196.903 | 千吨 | 2026-9 |
| 1983/1984 | 248.762 | 千吨 | 2026-9 |
| 1982/1983 | 234.177 | 千吨 | 2026-9 |
| 1981/1982 | 332.223 | 千吨 | 2026-9 |
| 1980/1981 | 320.879 | 千吨 | 2026-9 |
| 1979/1980 | 396.237 | 千吨 | 2026-9 |
| 1978/1979 | 495.093 | 千吨 | 2026-9 |
| 1977/1978 | 384.893 | 千吨 | 2026-9 |
| 1976/1977 | 360.584 | 千吨 | 2026-9 |
| 1975/1976 | 395.426 | 千吨 | 2026-9 |
| 1974/1975 | 363.825 | 千吨 | 2026-9 |
| 1973/1974 | 272.261 | 千吨 | 2026-9 |
| 1972/1973 | 297.38 | 千吨 | 2026-9 |
| 1971/1972 | 265.778 | 千吨 | 2026-9 |
| 1970/1971 | 221.212 | 千吨 | 2026-9 |
| 1969/1970 | 274.692 | 千吨 | 2026-9 |