| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 1 | 吨/公顷 | 2026-9 |
| 2025/2026 | 0.857 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.066 | 吨/公顷 | 2026-9 |
| 2023/2024 | 0.833 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1 | 吨/公顷 | 2026-9 |
| 2021/2022 | 0.947 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.784 | 吨/公顷 | 2026-9 |
| 2019/2020 | 0.843 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.93 | 吨/公顷 | 2026-9 |
| 2017/2018 | 0.927 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.089 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.796 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.628 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.667 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.103 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.63 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.886 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.964 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.838 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.75 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.551 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.654 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.891 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.736 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.625 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.154 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.45 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.2 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.127 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.114 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.161 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.358 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.44 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.446 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.277 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.204 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.593 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.826 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.811 | 吨/公顷 | 2026-9 |