| 年度 | 数值 | 单位 | 发布日期 |
|---|---|---|---|
| 1990/1991 | 470.902 | 千吨 | 2026-9 |
| 1989/1990 | 382.191 | 千吨 | 2026-9 |
| 1988/1989 | 335.501 | 千吨 | 2026-9 |
| 1987/1988 | 373.52 | 千吨 | 2026-9 |
| 1986/1987 | 292.146 | 千吨 | 2026-9 |
| 1985/1986 | 239.453 | 千吨 | 2026-9 |
| 1984/1985 | 213.44 | 千吨 | 2026-9 |
| 1983/1984 | 76.705 | 千吨 | 2026-9 |
| 1982/1983 | 129.398 | 千吨 | 2026-9 |
| 1981/1982 | 50.692 | 千吨 | 2026-9 |
| 1980/1981 | 64.699 | 千吨 | 2026-9 |
| 1979/1980 | 68.701 | 千吨 | 2026-9 |
| 1978/1979 | 64.032 | 千吨 | 2026-9 |
| 1977/1978 | 56.028 | 千吨 | 2026-9 |
| 1976/1977 | 6.67 | 千吨 | 2026-9 |
| 1975/1976 | 3.335 | 千吨 | 2026-9 |
| 1974/1975 | 8.004 | 千吨 | 2026-9 |
| 1973/1974 | 23.345 | 千吨 | 2026-9 |
| 1972/1973 | 22.678 | 千吨 | 2026-9 |