| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 3761 | 千吨 | 2026-9 |
| 1997/1998 | 3858 | 千吨 | 2026-9 |
| 1996/1997 | 2503 | 千吨 | 2026-9 |
| 1995/1996 | 2545 | 千吨 | 2026-9 |
| 1994/1995 | 2085 | 千吨 | 2026-9 |
| 1993/1994 | 1707 | 千吨 | 2026-9 |
| 1992/1993 | 1442 | 千吨 | 2026-9 |
| 1991/1992 | 1238 | 千吨 | 2026-9 |
| 1990/1991 | 1528 | 千吨 | 2026-9 |
| 1989/1990 | 1681 | 千吨 | 2026-9 |
| 1988/1989 | 2511 | 千吨 | 2026-9 |
| 1987/1988 | 2200 | 千吨 | 2026-9 |
| 1986/1987 | 2400 | 千吨 | 2026-9 |
| 1985/1986 | 2800 | 千吨 | 2026-9 |
| 1984/1985 | 3000 | 千吨 | 2026-9 |
| 1983/1984 | 4000 | 千吨 | 2026-9 |
| 1982/1983 | 4600 | 千吨 | 2026-9 |
| 1981/1982 | 5600 | 千吨 | 2026-9 |
| 1980/1981 | 5600 | 千吨 | 2026-9 |
| 1979/1980 | 6400 | 千吨 | 2026-9 |
| 1978/1979 | 5700 | 千吨 | 2026-9 |
| 1977/1978 | 6300 | 千吨 | 2026-9 |
| 1976/1977 | 5900 | 千吨 | 2026-9 |
| 1975/1976 | 5400 | 千吨 | 2026-9 |
| 1974/1975 | 4900 | 千吨 | 2026-9 |
| 1973/1974 | 5900 | 千吨 | 2026-9 |
| 1972/1973 | 7000 | 千吨 | 2026-9 |
| 1971/1972 | 13353 | 千吨 | 2026-9 |
| 1970/1971 | 14882 | 千吨 | 2026-9 |
| 1969/1970 | 13212 | 千吨 | 2026-9 |
| 1968/1969 | 13219 | 千吨 | 2026-9 |
| 1967/1968 | 10704 | 千吨 | 2026-9 |
| 1966/1967 | 11480 | 千吨 | 2026-9 |
| 1965/1966 | 12072 | 千吨 | 2026-9 |
| 1964/1965 | 10846 | 千吨 | 2026-9 |
| 1963/1964 | 11550 | 千吨 | 2026-9 |
| 1962/1963 | 10802 | 千吨 | 2026-9 |
| 1961/1962 | 14941 | 千吨 | 2026-9 |
| 1960/1961 | 14627 | 千吨 | 2026-9 |