| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 2.394 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2.553 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2.175 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.198 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.193 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.593 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2.341 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.351 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.272 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.314 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2.372 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2.197 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.955 | 吨/公顷 | 2026-9 |
| 2013/2014 | 2.253 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.565 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.925 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.865 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.979 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.946 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.518 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.718 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.833 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.577 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.444 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.246 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.326 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.483 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.581 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.408 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.31 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.467 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.221 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.257 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.335 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.272 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.345 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.291 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.1 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.135 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.423 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.412 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.257 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.111 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.118 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.252 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.319 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.194 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.002 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.238 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.358 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.163 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.006 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.91 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.944 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.981 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.004 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.999 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.931 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.033 | 吨/公顷 | 2026-9 |
| 1967/1968 | 0.854 | 吨/公顷 | 2026-9 |
| 1966/1967 | 0.948 | 吨/公顷 | 2026-9 |
| 1965/1966 | 0.883 | 吨/公顷 | 2026-9 |
| 1964/1965 | 0.938 | 吨/公顷 | 2026-9 |