| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 1.889 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.778 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.714 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.683 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.29 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.512 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2.205 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.763 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.3 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.357 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2.196 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.044 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.431 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.904 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.17 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.956 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.564 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.053 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.418 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.185 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.878 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.02 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.125 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.125 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.6 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.702 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.485 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.819 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.379 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.475 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.642 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.43 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.854 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.156 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.682 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.486 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.125 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.094 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.944 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.009 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.637 | 吨/公顷 | 2026-9 |
| 1985/1986 | 0.47 | 吨/公顷 | 2026-9 |
| 1984/1985 | 0.781 | 吨/公顷 | 2026-9 |
| 1983/1984 | 0.281 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.357 | 吨/公顷 | 2026-9 |
| 1981/1982 | 0.457 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.971 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.957 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.616 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.27 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.184 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.726 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.963 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.407 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.766 | 吨/公顷 | 2026-9 |