| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 3.821 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3.771 | 吨/公顷 | 2026-9 |
| 2024/2025 | 3.918 | 吨/公顷 | 2026-9 |
| 2023/2024 | 4.008 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.913 | 吨/公顷 | 2026-9 |
| 2021/2022 | 3.81 | 吨/公顷 | 2026-9 |
| 2020/2021 | 3.803 | 吨/公顷 | 2026-9 |
| 2019/2020 | 3.782 | 吨/公顷 | 2026-9 |
| 2018/2019 | 3.752 | 吨/公顷 | 2026-9 |
| 2017/2018 | 3.709 | 吨/公顷 | 2026-9 |
| 2016/2017 | 3.678 | 吨/公顷 | 2026-9 |
| 2015/2016 | 3.639 | 吨/公顷 | 2026-9 |
| 2014/2015 | 3.639 | 吨/公顷 | 2026-9 |
| 2013/2014 | 3.658 | 吨/公顷 | 2026-9 |
| 2012/2013 | 3.588 | 吨/公顷 | 2026-9 |
| 2011/2012 | 3.529 | 吨/公顷 | 2026-9 |
| 2010/2011 | 3.46 | 吨/公顷 | 2026-9 |
| 2009/2010 | 3.411 | 吨/公顷 | 2026-9 |
| 2008/2009 | 3.355 | 吨/公顷 | 2026-9 |
| 2007/2008 | 3.347 | 吨/公顷 | 2026-9 |
| 2006/2007 | 3.254 | 吨/公顷 | 2026-9 |
| 2005/2006 | 3.076 | 吨/公顷 | 2026-9 |
| 2004/2005 | 3.023 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.654 | 吨/公顷 | 2026-9 |
| 2002/2003 | 3.011 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.888 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.973 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.961 | 吨/公顷 | 2026-9 |
| 1998/1999 | 2.943 | 吨/公顷 | 2026-9 |
| 1997/1998 | 2.592 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2.804 | 吨/公顷 | 2026-9 |
| 1995/1996 | 2.678 | 吨/公顷 | 2026-9 |
| 1994/1995 | 2.564 | 吨/公顷 | 2026-9 |
| 1993/1994 | 2.492 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2 | 吨/公顷 | 2026-9 |
| 1991/1992 | 2.188 | 吨/公顷 | 2026-9 |
| 1990/1991 | 2.191 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.821 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.845 | 吨/公顷 | 2026-9 |
| 1987/1988 | 2.042 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.808 | 吨/公顷 | 2026-9 |
| 1985/1986 | 2.008 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.989 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.795 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.621 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.548 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.539 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.36 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.345 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.173 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.017 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.209 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.272 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.211 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.114 | 吨/公顷 | 2026-9 |