| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 7 | 千吨 | 2026-9 |
| 1997/1998 | 0 | 千吨 | 2026-9 |
| 1996/1997 | 59 | 千吨 | 2026-9 |
| 1995/1996 | 0 | 千吨 | 2026-9 |
| 1994/1995 | 45 | 千吨 | 2026-9 |
| 1993/1994 | 64 | 千吨 | 2026-9 |
| 1992/1993 | 65 | 千吨 | 2026-9 |
| 1991/1992 | 42 | 千吨 | 2026-9 |
| 1990/1991 | 0 | 千吨 | 2026-9 |
| 1986/1987 | 6 | 千吨 | 2026-9 |
| 1985/1986 | 3 | 千吨 | 2026-9 |
| 1984/1985 | 40 | 千吨 | 2026-9 |
| 1983/1984 | 96 | 千吨 | 2026-9 |
| 1982/1983 | 172 | 千吨 | 2026-9 |
| 1981/1982 | 45 | 千吨 | 2026-9 |
| 1980/1981 | 156 | 千吨 | 2026-9 |
| 1979/1980 | 347 | 千吨 | 2026-9 |
| 1978/1979 | 202 | 千吨 | 2026-9 |
| 1977/1978 | 129 | 千吨 | 2026-9 |
| 1975/1976 | 76 | 千吨 | 2026-9 |
| 1974/1975 | 106 | 千吨 | 2026-9 |
| 1973/1974 | 179 | 千吨 | 2026-9 |
| 1972/1973 | 142 | 千吨 | 2026-9 |
| 1971/1972 | 95 | 千吨 | 2026-9 |
| 1970/1971 | 67 | 千吨 | 2026-9 |
| 1969/1970 | 65 | 千吨 | 2026-9 |
| 1968/1969 | 113 | 千吨 | 2026-9 |
| 1967/1968 | 34 | 千吨 | 2026-9 |
| 1966/1967 | 46 | 千吨 | 2026-9 |
| 1965/1966 | 29 | 千吨 | 2026-9 |
| 1964/1965 | 60 | 千吨 | 2026-9 |