| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 1 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.077 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.098 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.1 | 吨/公顷 | 2026-9 |
| 2022/2023 | 0.976 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.958 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.038 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.966 | 吨/公顷 | 2026-9 |
| 2017/2018 | 0.951 | 吨/公顷 | 2026-9 |
| 2016/2017 | 0.924 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.927 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.944 | 吨/公顷 | 2026-9 |
| 2013/2014 | 0.918 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.917 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.922 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.845 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.954 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.956 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.989 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.978 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.989 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.951 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.926 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.901 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.876 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.952 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.068 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.987 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.012 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.994 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.967 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.988 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.94 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.905 | 吨/公顷 | 2026-9 |
| 1990/1991 | 0.845 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.774 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.772 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.736 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.777 | 吨/公顷 | 2026-9 |
| 1985/1986 | 0.695 | 吨/公顷 | 2026-9 |
| 1984/1985 | 0.695 | 吨/公顷 | 2026-9 |
| 1983/1984 | 0.703 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.707 | 吨/公顷 | 2026-9 |
| 1981/1982 | 0.712 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.742 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.725 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.725 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.713 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.699 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.706 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.678 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.665 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.656 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.645 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.662 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.622 | 吨/公顷 | 2026-9 |
| 1968/1969 | 0.621 | 吨/公顷 | 2026-9 |
| 1967/1968 | 0.543 | 吨/公顷 | 2026-9 |
| 1966/1967 | 0.536 | 吨/公顷 | 2026-9 |
| 1965/1966 | 0.638 | 吨/公顷 | 2026-9 |
| 1964/1965 | 0.631 | 吨/公顷 | 2026-9 |
| 1963/1964 | 0.633 | 吨/公顷 | 2026-9 |
| 1962/1963 | 0.62 | 吨/公顷 | 2026-9 |
| 1961/1962 | 0.642 | 吨/公顷 | 2026-9 |
| 1960/1961 | 0.607 | 吨/公顷 | 2026-9 |