| 年度 | 数值 | 单位 | 发布日期 |
| 1998/1999 | 243 | 千吨 | 2026-9 |
| 1997/1998 | 269 | 千吨 | 2026-9 |
| 1996/1997 | 255 | 千吨 | 2026-9 |
| 1995/1996 | 282 | 千吨 | 2026-9 |
| 1994/1995 | 318 | 千吨 | 2026-9 |
| 1993/1994 | 198 | 千吨 | 2026-9 |
| 1992/1993 | 233 | 千吨 | 2026-9 |
| 1991/1992 | 294 | 千吨 | 2026-9 |
| 1990/1991 | 231 | 千吨 | 2026-9 |
| 1989/1990 | 238 | 千吨 | 2026-9 |
| 1988/1989 | 144 | 千吨 | 2026-9 |
| 1987/1988 | 160 | 千吨 | 2026-9 |
| 1986/1987 | 170 | 千吨 | 2026-9 |
| 1985/1986 | 175 | 千吨 | 2026-9 |
| 1984/1985 | 154 | 千吨 | 2026-9 |
| 1983/1984 | 212 | 千吨 | 2026-9 |
| 1982/1983 | 242 | 千吨 | 2026-9 |
| 1981/1982 | 252 | 千吨 | 2026-9 |
| 1980/1981 | 244 | 千吨 | 2026-9 |
| 1979/1980 | 196 | 千吨 | 2026-9 |
| 1978/1979 | 179 | 千吨 | 2026-9 |
| 1977/1978 | 155 | 千吨 | 2026-9 |
| 1976/1977 | 164 | 千吨 | 2026-9 |
| 1975/1976 | 175 | 千吨 | 2026-9 |
| 1974/1975 | 114 | 千吨 | 2026-9 |
| 1973/1974 | 113 | 千吨 | 2026-9 |
| 1972/1973 | 160 | 千吨 | 2026-9 |