| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 5.539 | 吨/公顷 | 2026-9 |
| 2025/2026 | 4.639 | 吨/公顷 | 2026-9 |
| 2024/2025 | 5.409 | 吨/公顷 | 2026-9 |
| 2023/2024 | 5.266 | 吨/公顷 | 2026-9 |
| 2022/2023 | 4.988 | 吨/公顷 | 2026-9 |
| 2021/2022 | 4.827 | 吨/公顷 | 2026-9 |
| 2020/2021 | 4.555 | 吨/公顷 | 2026-9 |
| 2019/2020 | 4.648 | 吨/公顷 | 2026-9 |
| 2018/2019 | 4.127 | 吨/公顷 | 2026-9 |
| 2017/2018 | 4.318 | 吨/公顷 | 2026-9 |
| 2016/2017 | 4.799 | 吨/公顷 | 2026-9 |
| 2015/2016 | 4.784 | 吨/公顷 | 2026-9 |
| 2014/2015 | 5.107 | 吨/公顷 | 2026-9 |
| 2013/2014 | 4.857 | 吨/公顷 | 2026-9 |
| 2012/2013 | 4.786 | 吨/公顷 | 2026-9 |
| 2011/2012 | 4.5 | 吨/公顷 | 2026-9 |
| 2010/2011 | 4.643 | 吨/公顷 | 2026-9 |
| 2009/2010 | 4.429 | 吨/公顷 | 2026-9 |
| 2008/2009 | 4.412 | 吨/公顷 | 2026-9 |
| 2007/2008 | 4.769 | 吨/公顷 | 2026-9 |
| 2006/2007 | 4.5 | 吨/公顷 | 2026-9 |
| 2005/2006 | 4 | 吨/公顷 | 2026-9 |
| 2004/2005 | 3.75 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.724 | 吨/公顷 | 2026-9 |
| 2002/2003 | 4.167 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.833 | 吨/公顷 | 2026-9 |
| 2000/2001 | 3 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.643 | 吨/公顷 | 2026-9 |
| 1998/1999 | 2.769 | 吨/公顷 | 2026-9 |
| 1997/1998 | 2.138 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.808 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.421 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.177 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.532 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.253 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.277 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.986 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.232 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.062 | 吨/公顷 | 2026-9 |