| 年度 | 数值 | 单位 | 发布日期 |
| 1999/2000 | 250000 | 吨 | 2026-9 |
| 1998/1999 | 260000 | 吨 | 2026-9 |
| 1997/1998 | 295000 | 吨 | 2026-9 |
| 1996/1997 | 279000 | 吨 | 2026-9 |
| 1995/1996 | 265000 | 吨 | 2026-9 |
| 1994/1995 | 192000 | 吨 | 2026-9 |
| 1993/1994 | 165000 | 吨 | 2026-9 |
| 1992/1993 | 185000 | 吨 | 2026-9 |
| 1991/1992 | 165000 | 吨 | 2026-9 |
| 1990/1991 | 170000 | 吨 | 2026-9 |
| 1989/1990 | 169000 | 吨 | 2026-9 |
| 1988/1989 | 157000 | 吨 | 2026-9 |
| 1987/1988 | 151000 | 吨 | 2026-9 |
| 1986/1987 | 131000 | 吨 | 2026-9 |
| 1985/1986 | 123000 | 吨 | 2026-9 |
| 1984/1985 | 67000 | 吨 | 2026-9 |
| 1983/1984 | 112000 | 吨 | 2026-9 |
| 1982/1983 | 120000 | 吨 | 2026-9 |
| 1981/1982 | 130000 | 吨 | 2026-9 |
| 1980/1981 | 120000 | 吨 | 2026-9 |
| 1979/1980 | 180000 | 吨 | 2026-9 |
| 1978/1979 | 118000 | 吨 | 2026-9 |
| 1977/1978 | 105000 | 吨 | 2026-9 |
| 1976/1977 | 141000 | 吨 | 2026-9 |
| 1975/1976 | 70000 | 吨 | 2026-9 |
| 1974/1975 | 156000 | 吨 | 2026-9 |
| 1973/1974 | 122000 | 吨 | 2026-9 |
| 1972/1973 | 170000 | 吨 | 2026-9 |
| 1971/1972 | 85000 | 吨 | 2026-9 |