| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 2 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.679 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.943 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.787 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.59 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.59 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.57 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.47 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.41 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.48 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.3 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.239 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.262 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.247 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.391 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.094 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.102 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.972 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.852 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.918 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.973 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.926 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.908 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.083 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.771 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.932 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.761 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.792 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.693 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.575 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.598 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.73 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.795 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.783 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.94 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.062 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.134 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.129 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.874 | 吨/公顷 | 2026-9 |