| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 4.989 | 吨/公顷 | 2026-9 |
| 2025/2026 | 5.023 | 吨/公顷 | 2026-9 |
| 2024/2025 | 4.836 | 吨/公顷 | 2026-9 |
| 2023/2024 | 4.767 | 吨/公顷 | 2026-9 |
| 2022/2023 | 4.621 | 吨/公顷 | 2026-9 |
| 2021/2022 | 4.427 | 吨/公顷 | 2026-9 |
| 2020/2021 | 4.272 | 吨/公顷 | 2026-9 |
| 2019/2020 | 4.28 | 吨/公顷 | 2026-9 |
| 2018/2019 | 4.534 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.98 | 吨/公顷 | 2026-9 |
| 2016/2017 | 4.194 | 吨/公顷 | 2026-9 |
| 2015/2016 | 4.405 | 吨/公顷 | 2026-9 |
| 2014/2015 | 3.896 | 吨/公顷 | 2026-9 |
| 2013/2014 | 3.819 | 吨/公顷 | 2026-9 |
| 2012/2013 | 4.224 | 吨/公顷 | 2026-9 |
| 2011/2012 | 4.479 | 吨/公顷 | 2026-9 |
| 2010/2011 | 4.341 | 吨/公顷 | 2026-9 |
| 2009/2010 | 3.998 | 吨/公顷 | 2026-9 |
| 2008/2009 | 4.059 | 吨/公顷 | 2026-9 |
| 2007/2008 | 4.359 | 吨/公顷 | 2026-9 |
| 2006/2007 | 4.196 | 吨/公顷 | 2026-9 |
| 2005/2006 | 3.902 | 吨/公顷 | 2026-9 |
| 2004/2005 | 4.226 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.869 | 吨/公顷 | 2026-9 |
| 2002/2003 | 3.87 | 吨/公顷 | 2026-9 |
| 2001/2002 | 3.599 | 吨/公顷 | 2026-9 |
| 2000/2001 | 3.679 | 吨/公顷 | 2026-9 |
| 1999/2000 | 3.801 | 吨/公顷 | 2026-9 |
| 1998/1999 | 3.605 | 吨/公顷 | 2026-9 |
| 1997/1998 | 3.601 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2.869 | 吨/公顷 | 2026-9 |
| 1995/1996 | 2.669 | 吨/公顷 | 2026-9 |
| 1994/1995 | 3.076 | 吨/公顷 | 2026-9 |
| 1993/1994 | 2.862 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.723 | 吨/公顷 | 2026-9 |
| 1991/1992 | 2.445 | 吨/公顷 | 2026-9 |
| 1990/1991 | 2.989 | 吨/公顷 | 2026-9 |
| 1989/1990 | 2.942 | 吨/公顷 | 2026-9 |
| 1988/1989 | 3.437 | 吨/公顷 | 2026-9 |
| 1987/1988 | 3.043 | 吨/公顷 | 2026-9 |
| 1986/1987 | 3.111 | 吨/公顷 | 2026-9 |
| 1985/1986 | 2.851 | 吨/公顷 | 2026-9 |
| 1984/1985 | 3.162 | 吨/公顷 | 2026-9 |
| 1983/1984 | 2.903 | 吨/公顷 | 2026-9 |
| 1982/1983 | 2.93 | 吨/公顷 | 2026-9 |
| 1981/1982 | 3.323 | 吨/公顷 | 2026-9 |
| 1980/1981 | 2.732 | 吨/公顷 | 2026-9 |
| 1979/1980 | 2.34 | 吨/公顷 | 2026-9 |
| 1978/1979 | 2.271 | 吨/公顷 | 2026-9 |
| 1977/1978 | 2.107 | 吨/公顷 | 2026-9 |
| 1976/1977 | 2.4 | 吨/公顷 | 2026-9 |
| 1975/1976 | 2.548 | 吨/公顷 | 2026-9 |
| 1974/1975 | 2.386 | 吨/公顷 | 2026-9 |
| 1973/1974 | 2.843 | 吨/公顷 | 2026-9 |
| 1972/1973 | 2.438 | 吨/公顷 | 2026-9 |
| 1971/1972 | 2.263 | 吨/公顷 | 2026-9 |
| 1970/1971 | 2.235 | 吨/公顷 | 2026-9 |
| 1969/1970 | 2.211 | 吨/公顷 | 2026-9 |
| 1968/1969 | 2.183 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.57 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.891 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.573 | 吨/公顷 | 2026-9 |
| 1964/1965 | 1.578 | 吨/公顷 | 2026-9 |
| 1963/1964 | 1.752 | 吨/公顷 | 2026-9 |
| 1962/1963 | 1.723 | 吨/公顷 | 2026-9 |
| 1961/1962 | 1.779 | 吨/公顷 | 2026-9 |
| 1960/1961 | 1.495 | 吨/公顷 | 2026-9 |