| 年度 | 数值 | 单位 | 发布日期 |
| 1998/1999 | 5180 | 千吨 | 2026-9 |
| 1997/1998 | 5314 | 千吨 | 2026-9 |
| 1996/1997 | 5194 | 千吨 | 2026-9 |
| 1995/1996 | 5124 | 千吨 | 2026-9 |
| 1994/1995 | 5149 | 千吨 | 2026-9 |
| 1993/1994 | 4808 | 千吨 | 2026-9 |
| 1992/1993 | 4600 | 千吨 | 2026-9 |
| 1991/1992 | 6239 | 千吨 | 2026-9 |
| 1990/1991 | 8085 | 千吨 | 2026-9 |
| 1989/1990 | 7560 | 千吨 | 2026-9 |
| 1988/1989 | 7800 | 千吨 | 2026-9 |
| 1987/1988 | 6250 | 千吨 | 2026-9 |
| 1986/1987 | 6369 | 千吨 | 2026-9 |
| 1985/1986 | 5815 | 千吨 | 2026-9 |
| 1984/1985 | 6788 | 千吨 | 2026-9 |
| 1983/1984 | 5460 | 千吨 | 2026-9 |
| 1982/1983 | 6165 | 千吨 | 2026-9 |
| 1981/1982 | 5455 | 千吨 | 2026-9 |
| 1980/1981 | 6127 | 千吨 | 2026-9 |
| 1979/1980 | 4866 | 千吨 | 2026-9 |
| 1978/1979 | 5597 | 千吨 | 2026-9 |
| 1977/1978 | 5563 | 千吨 | 2026-9 |
| 1976/1977 | 6264 | 千吨 | 2026-9 |
| 1975/1976 | 5009 | 千吨 | 2026-9 |
| 1974/1975 | 4656 | 千吨 | 2026-9 |
| 1973/1974 | 4886 | 千吨 | 2026-9 |
| 1972/1973 | 5533 | 千吨 | 2026-9 |
| 1971/1972 | 5693 | 千吨 | 2026-9 |
| 1970/1971 | 4042 | 千吨 | 2026-9 |
| 1969/1970 | 3595 | 千吨 | 2026-9 |
| 1968/1969 | 3412 | 千吨 | 2026-9 |
| 1967/1968 | 4345 | 千吨 | 2026-9 |
| 1966/1967 | 4203 | 千吨 | 2026-9 |
| 1965/1966 | 5653 | 千吨 | 2026-9 |
| 1964/1965 | 3991 | 千吨 | 2026-9 |
| 1963/1964 | 3629 | 千吨 | 2026-9 |
| 1962/1963 | 3800 | 千吨 | 2026-9 |
| 1961/1962 | 3795 | 千吨 | 2026-9 |
| 1960/1961 | 3303 | 千吨 | 2026-9 |