| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 3.2 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3.456 | 吨/公顷 | 2026-9 |
| 2024/2025 | 3.124 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.601 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.189 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.939 | 吨/公顷 | 2026-9 |
| 2020/2021 | 3.306 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.929 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.719 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.868 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2.975 | 吨/公顷 | 2026-9 |
| 2015/2016 | 3.004 | 吨/公顷 | 2026-9 |
| 2014/2015 | 3.115 | 吨/公顷 | 2026-9 |
| 2013/2014 | 3.16 | 吨/公顷 | 2026-9 |
| 2012/2013 | 2.966 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.94 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.744 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.953 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.972 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.867 | 吨/公顷 | 2026-9 |
| 2006/2007 | 2.658 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.758 | 吨/公顷 | 2026-9 |
| 2004/2005 | 3.09 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.834 | 吨/公顷 | 2026-9 |
| 2002/2003 | 2.993 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.798 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.881 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.74 | 吨/公顷 | 2026-9 |