| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2025/2026 | 0.373 | 吨/公顷 | 2026-9 |
| 2024/2025 | 0.324 | 吨/公顷 | 2026-9 |
| 2023/2024 | 0.431 | 吨/公顷 | 2026-9 |
| 2022/2023 | 0.36 | 吨/公顷 | 2026-9 |
| 2021/2022 | 0.369 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.397 | 吨/公顷 | 2026-9 |
| 2019/2020 | 0.376 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.213 | 吨/公顷 | 2026-9 |
| 2017/2018 | 0.101 | 吨/公顷 | 2026-9 |
| 2016/2017 | 0.448 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.376 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.428 | 吨/公顷 | 2026-9 |
| 2013/2014 | 0.312 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.32 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.303 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.4 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.325 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.311 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.422 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.32 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.429 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.47 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.3 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.308 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.308 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.3 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.336 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.288 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.5 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.54 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.548 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.456 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.453 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.445 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.562 | 吨/公顷 | 2026-9 |
| 1990/1991 | 0.59 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.481 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.558 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.581 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.489 | 吨/公顷 | 2026-9 |
| 1985/1986 | 0.507 | 吨/公顷 | 2026-9 |
| 1984/1985 | 0.472 | 吨/公顷 | 2026-9 |
| 1983/1984 | 0.705 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.496 | 吨/公顷 | 2026-9 |
| 1981/1982 | 0.351 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.337 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.34 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.369 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.323 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.341 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.428 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.393 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.323 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.283 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.26 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.224 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.296 | 吨/公顷 | 2026-9 |