| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 3370 | 千吨 | 2026-9 |
| 1989/1990 | 3388 | 千吨 | 2026-9 |
| 1988/1989 | 3047 | 千吨 | 2026-9 |
| 1987/1988 | 3430 | 千吨 | 2026-9 |
| 1986/1987 | 3108 | 千吨 | 2026-9 |
| 1985/1986 | 2681 | 千吨 | 2026-9 |
| 1984/1985 | 2695 | 千吨 | 2026-9 |
| 1983/1984 | 2783 | 千吨 | 2026-9 |
| 1982/1983 | 2746 | 千吨 | 2026-9 |
| 1981/1982 | 2926 | 千吨 | 2026-9 |
| 1980/1981 | 2797 | 千吨 | 2026-9 |
| 1979/1980 | 3332 | 千吨 | 2026-9 |
| 1978/1979 | 3020 | 千吨 | 2026-9 |
| 1977/1978 | 2370 | 千吨 | 2026-9 |
| 1976/1977 | 1576 | 千吨 | 2026-9 |
| 1975/1976 | 1611 | 千吨 | 2026-9 |
| 1974/1975 | 1145 | 千吨 | 2026-9 |
| 1973/1974 | 1589 | 千吨 | 2026-9 |
| 1972/1973 | 1194 | 千吨 | 2026-9 |
| 1971/1972 | 1664 | 千吨 | 2026-9 |
| 1970/1971 | 1128 | 千吨 | 2026-9 |
| 1969/1970 | 1100 | 千吨 | 2026-9 |
| 1968/1969 | 968 | 千吨 | 2026-9 |
| 1967/1968 | 590 | 千吨 | 2026-9 |
| 1966/1967 | 440 | 千吨 | 2026-9 |
| 1965/1966 | 399 | 千吨 | 2026-9 |
| 1964/1965 | 425 | 千吨 | 2026-9 |