| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 1.364 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.392 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.46 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.097 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.196 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.098 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.125 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.029 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.998 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.023 | 吨/公顷 | 2026-9 |
| 2016/2017 | 0.936 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.762 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.667 | 吨/公顷 | 2026-9 |
| 2013/2014 | 0.697 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.587 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.429 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.442 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.569 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.41 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.589 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.592 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.587 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.581 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.655 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.594 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.598 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.401 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.488 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.419 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.283 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.221 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.404 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.364 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.319 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.33 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.568 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.029 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.802 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.139 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.125 | 吨/公顷 | 2026-9 |