| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 3.477 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3.679 | 吨/公顷 | 2026-9 |
| 2024/2025 | 3.596 | 吨/公顷 | 2026-9 |
| 2023/2024 | 3.226 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.321 | 吨/公顷 | 2026-9 |
| 2021/2022 | 3.431 | 吨/公顷 | 2026-9 |
| 2020/2021 | 3.039 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.821 | 吨/公顷 | 2026-9 |
| 2018/2019 | 3.349 | 吨/公顷 | 2026-9 |
| 2017/2018 | 3.253 | 吨/公顷 | 2026-9 |
| 2016/2017 | 3.133 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2.577 | 吨/公顷 | 2026-9 |
| 2014/2015 | 2.913 | 吨/公顷 | 2026-9 |
| 2013/2014 | 3.017 | 吨/公顷 | 2026-9 |
| 2012/2013 | 3.389 | 吨/公顷 | 2026-9 |
| 2011/2012 | 3.18 | 吨/公顷 | 2026-9 |
| 2010/2011 | 3.053 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.258 | 吨/公顷 | 2026-9 |
| 2008/2009 | 3.333 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.465 | 吨/公顷 | 2026-9 |
| 2006/2007 | 3.079 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.529 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.929 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.917 | 吨/公顷 | 2026-9 |
| 2002/2003 | 2.434 | 吨/公顷 | 2026-9 |
| 2001/2002 | 3.348 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.789 | 吨/公顷 | 2026-9 |
| 1999/2000 | 3.535 | 吨/公顷 | 2026-9 |
| 1998/1999 | 2.21 | 吨/公顷 | 2026-9 |
| 1997/1998 | 2.671 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2.439 | 吨/公顷 | 2026-9 |
| 1995/1996 | 2.517 | 吨/公顷 | 2026-9 |
| 1994/1995 | 2.158 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.993 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.222 | 吨/公顷 | 2026-9 |
| 1991/1992 | 2.136 | 吨/公顷 | 2026-9 |
| 1990/1991 | 2.083 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.923 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.868 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.957 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.833 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.604 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.578 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.528 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.2 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.533 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.727 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.75 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.5 | 吨/公顷 | 2026-9 |
| 1977/1978 | 2 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0 | 吨/公顷 | 2026-9 |