| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 5.5 | 吨/公顷 | 2026-9 |
| 2025/2026 | 5.5 | 吨/公顷 | 2026-9 |
| 2024/2025 | 5 | 吨/公顷 | 2026-9 |
| 2023/2024 | 5.5 | 吨/公顷 | 2026-9 |
| 2022/2023 | 5 | 吨/公顷 | 2026-9 |
| 2021/2022 | 4.9 | 吨/公顷 | 2026-9 |
| 2020/2021 | 5.455 | 吨/公顷 | 2026-9 |
| 2019/2020 | 5 | 吨/公顷 | 2026-9 |
| 2018/2019 | 5.308 | 吨/公顷 | 2026-9 |
| 2017/2018 | 5.417 | 吨/公顷 | 2026-9 |
| 2016/2017 | 5.417 | 吨/公顷 | 2026-9 |
| 2015/2016 | 5.25 | 吨/公顷 | 2026-9 |
| 2014/2015 | 5.1 | 吨/公顷 | 2026-9 |
| 2013/2014 | 6.042 | 吨/公顷 | 2026-9 |
| 2012/2013 | 6.077 | 吨/公顷 | 2026-9 |
| 2011/2012 | 5.633 | 吨/公顷 | 2026-9 |
| 2010/2011 | 5.103 | 吨/公顷 | 2026-9 |
| 2009/2010 | 5.72 | 吨/公顷 | 2026-9 |
| 2008/2009 | 5 | 吨/公顷 | 2026-9 |
| 2007/2008 | 5.143 | 吨/公顷 | 2026-9 |
| 2006/2007 | 4.546 | 吨/公顷 | 2026-9 |
| 2005/2006 | 4.381 | 吨/公顷 | 2026-9 |
| 2004/2005 | 3.667 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.864 | 吨/公顷 | 2026-9 |
| 2002/2003 | 3.947 | 吨/公顷 | 2026-9 |
| 2001/2002 | 3.632 | 吨/公顷 | 2026-9 |
| 2000/2001 | 3.56 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.864 | 吨/公顷 | 2026-9 |
| 1998/1999 | 3.429 | 吨/公顷 | 2026-9 |
| 1997/1998 | 2.826 | 吨/公顷 | 2026-9 |
| 1996/1997 | 3.565 | 吨/公顷 | 2026-9 |
| 1995/1996 | 3.636 | 吨/公顷 | 2026-9 |
| 1994/1995 | 3.391 | 吨/公顷 | 2026-9 |
| 1993/1994 | 2.833 | 吨/公顷 | 2026-9 |
| 1992/1993 | 3.833 | 吨/公顷 | 2026-9 |
| 1991/1992 | 4.435 | 吨/公顷 | 2026-9 |
| 1990/1991 | 4.179 | 吨/公顷 | 2026-9 |
| 1989/1990 | 4.606 | 吨/公顷 | 2026-9 |
| 1988/1989 | 4.657 | 吨/公顷 | 2026-9 |
| 1987/1988 | 4.886 | 吨/公顷 | 2026-9 |