| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 0.886 | 吨/公顷 | 2026-9 |
| 2025/2026 | 0.877 | 吨/公顷 | 2026-9 |
| 2024/2025 | 0.887 | 吨/公顷 | 2026-9 |
| 2023/2024 | 0.85 | 吨/公顷 | 2026-9 |
| 2022/2023 | 0.864 | 吨/公顷 | 2026-9 |
| 2021/2022 | 0.834 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.879 | 吨/公顷 | 2026-9 |
| 2019/2020 | 0.903 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.876 | 吨/公顷 | 2026-9 |
| 2017/2018 | 0.977 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.057 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.894 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.978 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.101 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.008 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.999 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.015 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.997 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.038 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.089 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.028 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.912 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.918 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.779 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.574 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.584 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.571 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.588 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.589 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.588 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.647 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.621 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.602 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.559 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.61 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.518 | 吨/公顷 | 2026-9 |
| 1990/1991 | 0.524 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.6 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.506 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.495 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.463 | 吨/公顷 | 2026-9 |
| 1985/1986 | 0.485 | 吨/公顷 | 2026-9 |
| 1984/1985 | 0.467 | 吨/公顷 | 2026-9 |
| 1983/1984 | 0.343 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.387 | 吨/公顷 | 2026-9 |
| 1981/1982 | 0.368 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.351 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.349 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.345 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.326 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.309 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.322 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.35 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.316 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.307 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.337 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.267 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.282 | 吨/公顷 | 2026-9 |