| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 5.194 | 吨/公顷 | 2026-9 |
| 2025/2026 | 5.627 | 吨/公顷 | 2026-9 |
| 2024/2025 | 4.936 | 吨/公顷 | 2026-9 |
| 2023/2024 | 4.628 | 吨/公顷 | 2026-9 |
| 2022/2023 | 5.023 | 吨/公顷 | 2026-9 |
| 2021/2022 | 5.07 | 吨/公顷 | 2026-9 |
| 2020/2021 | 4.908 | 吨/公顷 | 2026-9 |
| 2019/2020 | 4.944 | 吨/公顷 | 2026-9 |
| 2018/2019 | 4.426 | 吨/公顷 | 2026-9 |
| 2017/2018 | 4.715 | 吨/公顷 | 2026-9 |
| 2016/2017 | 4.757 | 吨/公顷 | 2026-9 |
| 2015/2016 | 5.07 | 吨/公顷 | 2026-9 |
| 2014/2015 | 4.879 | 吨/公顷 | 2026-9 |
| 2013/2014 | 4.809 | 吨/公顷 | 2026-9 |
| 2012/2013 | 4.381 | 吨/公顷 | 2026-9 |
| 2011/2012 | 4.342 | 吨/公顷 | 2026-9 |
| 2010/2011 | 4.285 | 吨/公顷 | 2026-9 |
| 2009/2010 | 4.457 | 吨/公顷 | 2026-9 |
| 2008/2009 | 4.515 | 吨/公顷 | 2026-9 |
| 2007/2008 | 4.169 | 吨/公顷 | 2026-9 |
| 2006/2007 | 4.062 | 吨/公顷 | 2026-9 |
| 2005/2006 | 3.968 | 吨/公顷 | 2026-9 |
| 2004/2005 | 4.665 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.967 | 吨/公顷 | 2026-9 |
| 2002/2003 | 4.155 | 吨/公顷 | 2026-9 |
| 2001/2002 | 4.165 | 吨/公顷 | 2026-9 |
| 2000/2001 | 4.256 | 吨/公顷 | 2026-9 |
| 1999/2000 | 4.018 | 吨/公顷 | 2026-9 |