| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 0.45 | 吨/公顷 | 2026-9 |
| 2025/2026 | 0.535 | 吨/公顷 | 2026-9 |
| 2024/2025 | 0.507 | 吨/公顷 | 2026-9 |
| 2023/2024 | 0.448 | 吨/公顷 | 2026-9 |
| 2022/2023 | 0.45 | 吨/公顷 | 2026-9 |
| 2021/2022 | 0.372 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.456 | 吨/公顷 | 2026-9 |
| 2019/2020 | 0.45 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.451 | 吨/公顷 | 2026-9 |
| 2017/2018 | 0.438 | 吨/公顷 | 2026-9 |
| 2016/2017 | 0.446 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.43 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.422 | 吨/公顷 | 2026-9 |
| 2013/2014 | 0.484 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.506 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.284 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.496 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.492 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.469 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.395 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.404 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.516 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.14 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.464 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.357 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.331 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.525 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.706 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.5 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.357 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.725 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.65 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.577 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.59 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.5 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.5 | 吨/公顷 | 2026-9 |
| 1990/1991 | 0.556 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.75 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.665 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.845 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.814 | 吨/公顷 | 2026-9 |
| 1984/1985 | 0 | 吨/公顷 | 2026-9 |