| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 1.094 | 吨/公顷 | 2026-9 |
| 2025/2026 | 0.938 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.066 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1 | 吨/公顷 | 2026-9 |
| 2022/2023 | 0.873 | 吨/公顷 | 2026-9 |
| 2021/2022 | 0.836 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.802 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.061 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.008 | 吨/公顷 | 2026-9 |
| 2017/2018 | 0.846 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.036 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.97 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.773 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.206 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.124 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.955 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.806 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.978 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.931 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.08 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.25 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.239 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.15 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.213 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.214 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.386 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.026 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.972 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.763 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.244 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.927 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.209 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.073 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.046 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.273 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.41 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.558 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.597 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.395 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.354 | 吨/公顷 | 2026-9 |