| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 3 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3.219 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2.579 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.331 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.42 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.804 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2.662 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.526 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.658 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.226 | 吨/公顷 | 2026-9 |
| 2016/2017 | 3.175 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2.261 | 吨/公顷 | 2026-9 |
| 2014/2015 | 2.174 | 吨/公顷 | 2026-9 |
| 2013/2014 | 2.514 | 吨/公顷 | 2026-9 |
| 2012/2013 | 2.305 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.673 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.744 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.07 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.45 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.103 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.271 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.065 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.121 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.375 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.432 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.884 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.131 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.919 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.535 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.576 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.743 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.474 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.475 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.496 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.372 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.435 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.006 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.654 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.681 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.755 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.466 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.648 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.01 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.105 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.654 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.154 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.874 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.751 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.957 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.655 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.909 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.61 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.157 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.104 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.463 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.9 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.916 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.815 | 吨/公顷 | 2026-9 |
| 1968/1969 | 0.879 | 吨/公顷 | 2026-9 |
| 1967/1968 | 0.76 | 吨/公顷 | 2026-9 |
| 1966/1967 | 0.854 | 吨/公顷 | 2026-9 |
| 1965/1966 | 0.766 | 吨/公顷 | 2026-9 |
| 1964/1965 | 0.869 | 吨/公顷 | 2026-9 |
| 1963/1964 | 0.488 | 吨/公顷 | 2026-9 |
| 1962/1963 | 0.948 | 吨/公顷 | 2026-9 |
| 1961/1962 | 0.532 | 吨/公顷 | 2026-9 |
| 1960/1961 | 0.62 | 吨/公顷 | 2026-9 |