| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 2 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2 | 吨/公顷 | 2026-9 |
| 2023/2024 | 3 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.6 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.333 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.667 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.556 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.5 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.6 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.5 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.625 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.667 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.733 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.533 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.947 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.882 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.316 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.87 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.958 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.75 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.071 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.071 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.077 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.923 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.579 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2.046 | 吨/公顷 | 2026-9 |
| 1995/1996 | 2.065 | 吨/公顷 | 2026-9 |
| 1994/1995 | 2.125 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.904 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.25 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.895 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.873 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.75 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.59 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.833 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.727 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.372 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.881 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.696 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.644 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.59 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.211 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.355 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.276 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.206 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.361 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.333 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.324 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.304 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.193 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.023 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.1 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.108 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.167 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.177 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.136 | 吨/公顷 | 2026-9 |
| 1965/1966 | 0.917 | 吨/公顷 | 2026-9 |
| 1964/1965 | 0.85 | 吨/公顷 | 2026-9 |
| 1963/1964 | 0.797 | 吨/公顷 | 2026-9 |
| 1962/1963 | 1.08 | 吨/公顷 | 2026-9 |
| 1961/1962 | 0.888 | 吨/公顷 | 2026-9 |
| 1960/1961 | 0.874 | 吨/公顷 | 2026-9 |