| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 3.621 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3.621 | 吨/公顷 | 2026-9 |
| 2024/2025 | 3.548 | 吨/公顷 | 2026-9 |
| 2023/2024 | 3.548 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.548 | 吨/公顷 | 2026-9 |
| 2021/2022 | 3.444 | 吨/公顷 | 2026-9 |
| 2020/2021 | 3.522 | 吨/公顷 | 2026-9 |
| 2019/2020 | 3.529 | 吨/公顷 | 2026-9 |
| 2018/2019 | 3.438 | 吨/公顷 | 2026-9 |
| 2017/2018 | 3.116 | 吨/公顷 | 2026-9 |
| 2016/2017 | 3.086 | 吨/公顷 | 2026-9 |
| 2015/2016 | 3.071 | 吨/公顷 | 2026-9 |
| 2014/2015 | 3.133 | 吨/公顷 | 2026-9 |
| 2013/2014 | 3.122 | 吨/公顷 | 2026-9 |
| 2012/2013 | 3.073 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.767 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.599 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.125 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.123 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.727 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.989 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.708 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.755 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.21 | 吨/公顷 | 2026-9 |
| 2002/2003 | 2.136 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.147 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.164 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.47 | 吨/公顷 | 2026-9 |
| 1998/1999 | 2.24 | 吨/公顷 | 2026-9 |
| 1997/1998 | 2.054 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.954 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.948 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.839 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.846 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.852 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.676 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.676 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.503 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.821 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.865 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.865 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.93 | 吨/公顷 | 2026-9 |
| 1984/1985 | 2.166 | 吨/公顷 | 2026-9 |
| 1983/1984 | 2.283 | 吨/公顷 | 2026-9 |
| 1982/1983 | 2.11 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.811 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.849 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.931 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.864 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.642 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.439 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.29 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.105 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.057 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.046 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.889 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.892 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.863 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.154 | 吨/公顷 | 2026-9 |
| 1967/1968 | 0.808 | 吨/公顷 | 2026-9 |
| 1966/1967 | 0.655 | 吨/公顷 | 2026-9 |
| 1965/1966 | 0.66 | 吨/公顷 | 2026-9 |
| 1964/1965 | 0.614 | 吨/公顷 | 2026-9 |
| 1963/1964 | 0.608 | 吨/公顷 | 2026-9 |
| 1962/1963 | 0.678 | 吨/公顷 | 2026-9 |
| 1961/1962 | 0.579 | 吨/公顷 | 2026-9 |
| 1960/1961 | 0.518 | 吨/公顷 | 2026-9 |