| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 6.011 | 吨/公顷 | 2026-9 |
| 2025/2026 | 6.011 | 吨/公顷 | 2026-9 |
| 2024/2025 | 6 | 吨/公顷 | 2026-9 |
| 2023/2024 | 6 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.173 | 吨/公顷 | 2026-9 |
| 2021/2022 | 6.693 | 吨/公顷 | 2026-9 |
| 2020/2021 | 5.256 | 吨/公顷 | 2026-9 |
| 2019/2020 | 6.029 | 吨/公顷 | 2026-9 |
| 2018/2019 | 6.5 | 吨/公顷 | 2026-9 |
| 2017/2018 | 6.5 | 吨/公顷 | 2026-9 |
| 2016/2017 | 6 | 吨/公顷 | 2026-9 |
| 2015/2016 | 6 | 吨/公顷 | 2026-9 |
| 2014/2015 | 5.918 | 吨/公顷 | 2026-9 |
| 2013/2014 | 6.471 | 吨/公顷 | 2026-9 |
| 2012/2013 | 5.931 | 吨/公顷 | 2026-9 |
| 2011/2012 | 6.135 | 吨/公顷 | 2026-9 |
| 2010/2011 | 6.132 | 吨/公顷 | 2026-9 |
| 2009/2010 | 5.878 | 吨/公顷 | 2026-9 |
| 2008/2009 | 6.092 | 吨/公顷 | 2026-9 |
| 2007/2008 | 5.68 | 吨/公顷 | 2026-9 |
| 2006/2007 | 5.62 | 吨/公顷 | 2026-9 |
| 2005/2006 | 5.415 | 吨/公顷 | 2026-9 |
| 2004/2005 | 5.308 | 吨/公顷 | 2026-9 |
| 2003/2004 | 4.882 | 吨/公顷 | 2026-9 |
| 2002/2003 | 4.882 | 吨/公顷 | 2026-9 |
| 2001/2002 | 4.91 | 吨/公顷 | 2026-9 |
| 2000/2001 | 4.267 | 吨/公顷 | 2026-9 |
| 1999/2000 | 4.254 | 吨/公顷 | 2026-9 |
| 1998/1999 | 4.504 | 吨/公顷 | 2026-9 |
| 1997/1998 | 4.454 | 吨/公顷 | 2026-9 |
| 1996/1997 | 4.38 | 吨/公顷 | 2026-9 |
| 1995/1996 | 4.466 | 吨/公顷 | 2026-9 |
| 1994/1995 | 4.546 | 吨/公顷 | 2026-9 |
| 1993/1994 | 4.49 | 吨/公顷 | 2026-9 |
| 1992/1993 | 4.463 | 吨/公顷 | 2026-9 |
| 1991/1992 | 4.503 | 吨/公顷 | 2026-9 |
| 1990/1991 | 4.643 | 吨/公顷 | 2026-9 |
| 1989/1990 | 4.426 | 吨/公顷 | 2026-9 |
| 1988/1989 | 4.5 | 吨/公顷 | 2026-9 |
| 1987/1988 | 4.4 | 吨/公顷 | 2026-9 |
| 1986/1987 | 4.119 | 吨/公顷 | 2026-9 |
| 1985/1986 | 4.094 | 吨/公顷 | 2026-9 |
| 1984/1985 | 2.983 | 吨/公顷 | 2026-9 |
| 1983/1984 | 2.689 | 吨/公顷 | 2026-9 |
| 1982/1983 | 3.007 | 吨/公顷 | 2026-9 |
| 1981/1982 | 3.117 | 吨/公顷 | 2026-9 |
| 1980/1981 | 2.105 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.765 | 吨/公顷 | 2026-9 |
| 1978/1979 | 3.017 | 吨/公顷 | 2026-9 |
| 1977/1978 | 2.586 | 吨/公顷 | 2026-9 |
| 1976/1977 | 3.597 | 吨/公顷 | 2026-9 |
| 1975/1976 | 3.642 | 吨/公顷 | 2026-9 |
| 1974/1975 | 2 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.504 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.312 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.59 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.35 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.5 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.3 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.5 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.49 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.48 | 吨/公顷 | 2026-9 |
| 1964/1965 | 1.471 | 吨/公顷 | 2026-9 |
| 1963/1964 | 1.35 | 吨/公顷 | 2026-9 |
| 1962/1963 | 1.452 | 吨/公顷 | 2026-9 |
| 1961/1962 | 1.427 | 吨/公顷 | 2026-9 |
| 1960/1961 | 1.471 | 吨/公顷 | 2026-9 |