| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 4.769 | 吨/公顷 | 2026-9 |
| 2025/2026 | 4.769 | 吨/公顷 | 2026-9 |
| 2024/2025 | 4.762 | 吨/公顷 | 2026-9 |
| 2023/2024 | 4.762 | 吨/公顷 | 2026-9 |
| 2022/2023 | 4.584 | 吨/公顷 | 2026-9 |
| 2021/2022 | 4.736 | 吨/公顷 | 2026-9 |
| 2020/2021 | 4.677 | 吨/公顷 | 2026-9 |
| 2019/2020 | 4.902 | 吨/公顷 | 2026-9 |
| 2018/2019 | 4.7 | 吨/公顷 | 2026-9 |
| 2017/2018 | 4.872 | 吨/公顷 | 2026-9 |
| 2016/2017 | 4.725 | 吨/公顷 | 2026-9 |
| 2015/2016 | 5.184 | 吨/公顷 | 2026-9 |
| 2014/2015 | 5.092 | 吨/公顷 | 2026-9 |
| 2013/2014 | 4.99 | 吨/公顷 | 2026-9 |
| 2012/2013 | 4.07 | 吨/公顷 | 2026-9 |
| 2011/2012 | 4.167 | 吨/公顷 | 2026-9 |
| 2010/2011 | 3.79 | 吨/公顷 | 2026-9 |
| 2009/2010 | 3.08 | 吨/公顷 | 2026-9 |
| 2008/2009 | 3.383 | 吨/公顷 | 2026-9 |
| 2007/2008 | 3.344 | 吨/公顷 | 2026-9 |
| 2006/2007 | 2.977 | 吨/公顷 | 2026-9 |
| 2005/2006 | 4.467 | 吨/公顷 | 2026-9 |
| 2004/2005 | 4.104 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.964 | 吨/公顷 | 2026-9 |
| 2002/2003 | 3.947 | 吨/公顷 | 2026-9 |
| 2001/2002 | 3.444 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.904 | 吨/公顷 | 2026-9 |
| 1999/2000 | 3.312 | 吨/公顷 | 2026-9 |
| 1998/1999 | 4.218 | 吨/公顷 | 2026-9 |
| 1997/1998 | 3.358 | 吨/公顷 | 2026-9 |
| 1996/1997 | 4.393 | 吨/公顷 | 2026-9 |
| 1995/1996 | 3.91 | 吨/公顷 | 2026-9 |
| 1994/1995 | 4.599 | 吨/公顷 | 2026-9 |
| 1993/1994 | 4.113 | 吨/公顷 | 2026-9 |
| 1992/1993 | 3.646 | 吨/公顷 | 2026-9 |
| 1991/1992 | 3.553 | 吨/公顷 | 2026-9 |
| 1990/1991 | 3.673 | 吨/公顷 | 2026-9 |
| 1989/1990 | 2.721 | 吨/公顷 | 2026-9 |
| 1988/1989 | 3.136 | 吨/公顷 | 2026-9 |
| 1987/1988 | 2.912 | 吨/公顷 | 2026-9 |
| 1986/1987 | 2.87 | 吨/公顷 | 2026-9 |
| 1985/1986 | 2.896 | 吨/公顷 | 2026-9 |
| 1984/1985 | 3.149 | 吨/公顷 | 2026-9 |
| 1983/1984 | 3.086 | 吨/公顷 | 2026-9 |
| 1982/1983 | 2.504 | 吨/公顷 | 2026-9 |
| 1981/1982 | 2.548 | 吨/公顷 | 2026-9 |
| 1980/1981 | 2.516 | 吨/公顷 | 2026-9 |
| 1979/1980 | 2.403 | 吨/公顷 | 2026-9 |
| 1978/1979 | 2.332 | 吨/公顷 | 2026-9 |
| 1977/1978 | 2.048 | 吨/公顷 | 2026-9 |
| 1976/1977 | 2.01 | 吨/公顷 | 2026-9 |
| 1975/1976 | 2.302 | 吨/公顷 | 2026-9 |
| 1974/1975 | 2.16 | 吨/公顷 | 2026-9 |
| 1973/1974 | 2.038 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.503 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.761 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.571 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.327 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.309 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.428 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.287 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.155 | 吨/公顷 | 2026-9 |
| 1964/1965 | 1.072 | 吨/公顷 | 2026-9 |
| 1963/1964 | 1.02 | 吨/公顷 | 2026-9 |
| 1962/1963 | 0.964 | 吨/公顷 | 2026-9 |
| 1961/1962 | 1.033 | 吨/公顷 | 2026-9 |
| 1960/1961 | 1.156 | 吨/公顷 | 2026-9 |