| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 2 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.667 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.263 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.8 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.352 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.595 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.811 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.473 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.5 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.773 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.88 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.8 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.308 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.02 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.789 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.377 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.363 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.556 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.913 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.088 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.175 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.221 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.322 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.057 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.06 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.161 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.429 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.24 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.5 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.892 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.633 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.881 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.492 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.092 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.798 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.649 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.801 | 吨/公顷 | 2026-9 |
| 1988/1989 | 2.079 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.955 | 吨/公顷 | 2026-9 |