| 年度 | 数值 | 单位 | 发布日期 |
| 1998/1999 | 575 | 千吨 | 2026-9 |
| 1997/1998 | 541 | 千吨 | 2026-9 |
| 1996/1997 | 2085 | 千吨 | 2026-9 |
| 1995/1996 | 834 | 千吨 | 2026-9 |
| 1994/1995 | 1112 | 千吨 | 2026-9 |
| 1993/1994 | 634 | 千吨 | 2026-9 |
| 1992/1993 | 973 | 千吨 | 2026-9 |
| 1991/1992 | 122 | 千吨 | 2026-9 |
| 1990/1991 | 266 | 千吨 | 2026-9 |
| 1989/1990 | 982 | 千吨 | 2026-9 |
| 1988/1989 | 1641 | 千吨 | 2026-9 |
| 1987/1988 | 2135 | 千吨 | 2026-9 |
| 1986/1987 | 2175 | 千吨 | 2026-9 |
| 1985/1986 | 1900 | 千吨 | 2026-9 |
| 1984/1985 | 1602 | 千吨 | 2026-9 |
| 1983/1984 | 2155 | 千吨 | 2026-9 |
| 1982/1983 | 3270 | 千吨 | 2026-9 |
| 1981/1982 | 3500 | 千吨 | 2026-9 |
| 1980/1981 | 3954 | 千吨 | 2026-9 |
| 1979/1980 | 3122 | 千吨 | 2026-9 |
| 1978/1979 | 2532 | 千吨 | 2026-9 |
| 1977/1978 | 2681 | 千吨 | 2026-9 |
| 1976/1977 | 2225 | 千吨 | 2026-9 |
| 1975/1976 | 1722 | 千吨 | 2026-9 |
| 1974/1975 | 1510 | 千吨 | 2026-9 |
| 1973/1974 | 1775 | 千吨 | 2026-9 |
| 1972/1973 | 1272 | 千吨 | 2026-9 |
| 1971/1972 | 1574 | 千吨 | 2026-9 |
| 1970/1971 | 1967 | 千吨 | 2026-9 |
| 1969/1970 | 1202 | 千吨 | 2026-9 |
| 1968/1969 | 1174 | 千吨 | 2026-9 |
| 1967/1968 | 1332 | 千吨 | 2026-9 |
| 1966/1967 | 1628 | 千吨 | 2026-9 |
| 1965/1966 | 1802 | 千吨 | 2026-9 |
| 1964/1965 | 1769 | 千吨 | 2026-9 |
| 1963/1964 | 2677 | 千吨 | 2026-9 |
| 1962/1963 | 2016 | 千吨 | 2026-9 |
| 1961/1962 | 1512 | 千吨 | 2026-9 |
| 1960/1961 | 1592 | 千吨 | 2026-9 |