| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 2.2 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2.2 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2.2 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.12 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.185 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.071 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.875 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.077 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.148 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2.044 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.783 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.35 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.296 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.615 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.875 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.095 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.177 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.633 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.482 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.148 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.444 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.714 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.429 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.375 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.273 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.75 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.821 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.769 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.071 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.167 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.938 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.143 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.081 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.563 | 吨/公顷 | 2026-9 |
| 1991/1992 | 2.02 | 吨/公顷 | 2026-9 |
| 1990/1991 | 2.511 | 吨/公顷 | 2026-9 |
| 1989/1990 | 2 | 吨/公顷 | 2026-9 |
| 1988/1989 | 2.283 | 吨/公顷 | 2026-9 |
| 1987/1988 | 2.256 | 吨/公顷 | 2026-9 |