| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 2.847 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2.524 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2.774 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.368 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.883 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.758 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2.706 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.975 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.354 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.766 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2.625 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2.351 | 吨/公顷 | 2026-9 |
| 2014/2015 | 2.442 | 吨/公顷 | 2026-9 |
| 2013/2014 | 2.242 | 吨/公顷 | 2026-9 |
| 2012/2013 | 2.122 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.143 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.156 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.036 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.059 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.954 | 吨/公顷 | 2026-9 |
| 2006/2007 | 2.079 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.92 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.929 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.876 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.937 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.828 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.789 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.752 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.665 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.648 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.581 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.684 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.598 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.461 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.399 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.466 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.608 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.241 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.357 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.468 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.408 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.227 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.249 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.36 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.314 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.194 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.189 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.245 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.164 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.183 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.308 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.146 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.143 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.211 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.143 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.214 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.217 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.005 | 吨/公顷 | 2026-9 |