| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1990/1991 | 68.628 | 千吨 | 2026-9 |
| 1989/1990 | 55.083 | 千吨 | 2026-9 |
| 1988/1989 | 32.96 | 千吨 | 2026-9 |
| 1987/1988 | 32.057 | 千吨 | 2026-9 |
| 1986/1987 | 29.348 | 千吨 | 2026-9 |
| 1985/1986 | 31.154 | 千吨 | 2026-9 |
| 1984/1985 | 14.9 | 千吨 | 2026-9 |
| 1983/1984 | 11.739 | 千吨 | 2026-9 |
| 1982/1983 | 20.318 | 千吨 | 2026-9 |
| 1981/1982 | 14.448 | 千吨 | 2026-9 |
| 1980/1981 | 13.997 | 千吨 | 2026-9 |
| 1979/1980 | 15.351 | 千吨 | 2026-9 |
| 1978/1979 | 17.609 | 千吨 | 2026-9 |
| 1977/1978 | 6.773 | 千吨 | 2026-9 |
| 1976/1977 | 9.933 | 千吨 | 2026-9 |
| 1975/1976 | 14.9 | 千吨 | 2026-9 |
| 1974/1975 | 7.224 | 千吨 | 2026-9 |
| 1973/1974 | 4.064 | 千吨 | 2026-9 |
| 1972/1973 | 6.773 | 千吨 | 2026-9 |
| 1971/1972 | 10.385 | 千吨 | 2026-9 |
| 1970/1971 | 6.321 | 千吨 | 2026-9 |
| 1969/1970 | 6.321 | 千吨 | 2026-9 |
| 1968/1969 | 8.579 | 千吨 | 2026-9 |
| 1967/1968 | 9.03 | 千吨 | 2026-9 |
| 1966/1967 | 10.836 | 千吨 | 2026-9 |
| 1965/1966 | 9.482 | 千吨 | 2026-9 |
| 1964/1965 | 9.933 | 千吨 | 2026-9 |