| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 1998/1999 | 1.019 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.947 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2.327 | 吨/公顷 | 2026-9 |
| 1995/1996 | 2.351 | 吨/公顷 | 2026-9 |
| 1994/1995 | 2.567 | 吨/公顷 | 2026-9 |
| 1993/1994 | 3.016 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.85 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.08 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.615 | 吨/公顷 | 2026-9 |
| 1989/1990 | 2.364 | 吨/公顷 | 2026-9 |
| 1988/1989 | 2.309 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.767 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.553 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.778 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.839 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.444 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.906 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.9 | 吨/公顷 | 2026-9 |
| 1980/1981 | 2.02 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.826 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.5 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.674 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.685 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.408 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.622 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.5 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.246 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.514 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.778 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.278 | 吨/公顷 | 2026-9 |
| 1968/1969 | 0.63 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.088 | 吨/公顷 | 2026-9 |
| 1966/1967 | 0.63 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.725 | 吨/公顷 | 2026-9 |
| 1964/1965 | 0.944 | 吨/公顷 | 2026-9 |
| 1963/1964 | 1.324 | 吨/公顷 | 2026-9 |
| 1962/1963 | 1.373 | 吨/公顷 | 2026-9 |
| 1961/1962 | 0.767 | 吨/公顷 | 2026-9 |
| 1960/1961 | 0.695 | 吨/公顷 | 2026-9 |