| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 42 | 千公顷 | 2026-9 |
| 2025/2026 | 42 | 千公顷 | 2026-9 |
| 2024/2025 | 42 | 千公顷 | 2026-9 |
| 2023/2024 | 43 | 千公顷 | 2026-9 |
| 2022/2023 | 41 | 千公顷 | 2026-9 |
| 2021/2022 | 38 | 千公顷 | 2026-9 |
| 2020/2021 | 35 | 千公顷 | 2026-9 |
| 2019/2020 | 53 | 千公顷 | 2026-9 |
| 2018/2019 | 38 | 千公顷 | 2026-9 |
| 2017/2018 | 17 | 千公顷 | 2026-9 |
| 2016/2017 | 35 | 千公顷 | 2026-9 |
| 2015/2016 | 35 | 千公顷 | 2026-9 |
| 2014/2015 | 32 | 千公顷 | 2026-9 |
| 2013/2014 | 31 | 千公顷 | 2026-9 |
| 2012/2013 | 30 | 千公顷 | 2026-9 |
| 2011/2012 | 27 | 千公顷 | 2026-9 |
| 2010/2011 | 31 | 千公顷 | 2026-9 |
| 2009/2010 | 33 | 千公顷 | 2026-9 |
| 2008/2009 | 29 | 千公顷 | 2026-9 |
| 2007/2008 | 18 | 千公顷 | 2026-9 |
| 2006/2007 | 6 | 千公顷 | 2026-9 |
| 2005/2006 | 1 | 千公顷 | 2026-9 |
| 2004/2005 | 0 | 千公顷 | 2026-9 |
| 2003/2004 | 0 | 千公顷 | 2026-9 |
| 2002/2003 | 0 | 千公顷 | 2026-9 |
| 2001/2002 | 0 | 千公顷 | 2026-9 |
| 2000/2001 | 0 | 千公顷 | 2026-9 |
| 1999/2000 | 0 | 千公顷 | 2026-9 |