| 年度 | 数值 | 单位 | 发布时间 |
| 2026/2027 | 7.273 | 吨/公顷 | 2026-9 |
| 2025/2026 | 7.273 | 吨/公顷 | 2026-9 |
| 2024/2025 | 7.054 | 吨/公顷 | 2026-9 |
| 2023/2024 | 7.304 | 吨/公顷 | 2026-9 |
| 2022/2023 | 7.035 | 吨/公顷 | 2026-9 |
| 2021/2022 | 7.138 | 吨/公顷 | 2026-9 |
| 2020/2021 | 7 | 吨/公顷 | 2026-9 |
| 2019/2020 | 7.073 | 吨/公顷 | 2026-9 |
| 2018/2019 | 7.241 | 吨/公顷 | 2026-9 |
| 2017/2018 | 6.569 | 吨/公顷 | 2026-9 |
| 2016/2017 | 6.552 | 吨/公顷 | 2026-9 |
| 2015/2016 | 6.909 | 吨/公顷 | 2026-9 |
| 2014/2015 | 6.909 | 吨/公顷 | 2026-9 |
| 2013/2014 | 7.019 | 吨/公顷 | 2026-9 |
| 2012/2013 | 6.667 | 吨/公顷 | 2026-9 |
| 2011/2012 | 6 | 吨/公顷 | 2026-9 |
| 2010/2011 | 6.704 | 吨/公顷 | 2026-9 |
| 2009/2010 | 5.521 | 吨/公顷 | 2026-9 |
| 2008/2009 | 5 | 吨/公顷 | 2026-9 |
| 2007/2008 | 4.696 | 吨/公顷 | 2026-9 |
| 2006/2007 | 5 | 吨/公顷 | 2026-9 |
| 2005/2006 | 4.583 | 吨/公顷 | 2026-9 |
| 2004/2005 | 4.596 | 吨/公顷 | 2026-9 |
| 2003/2004 | 4.313 | 吨/公顷 | 2026-9 |
| 2002/2003 | 3.94 | 吨/公顷 | 2026-9 |
| 2001/2002 | 3.808 | 吨/公顷 | 2026-9 |
| 2000/2001 | 3.887 | 吨/公顷 | 2026-9 |
| 1999/2000 | 3.746 | 吨/公顷 | 2026-9 |
| 1998/1999 | 3.316 | 吨/公顷 | 2026-9 |
| 1997/1998 | 3.492 | 吨/公顷 | 2026-9 |
| 1996/1997 | 3.333 | 吨/公顷 | 2026-9 |
| 1995/1996 | 3.333 | 吨/公顷 | 2026-9 |
| 1994/1995 | 3.333 | 吨/公顷 | 2026-9 |
| 1993/1994 | 3 | 吨/公顷 | 2026-9 |
| 1992/1993 | 3.333 | 吨/公顷 | 2026-9 |
| 1991/1992 | 3.125 | 吨/公顷 | 2026-9 |
| 1990/1991 | 4.646 | 吨/公顷 | 2026-9 |
| 1989/1990 | 4.646 | 吨/公顷 | 2026-9 |
| 1988/1989 | 3.236 | 吨/公顷 | 2026-9 |
| 1987/1988 | 4 | 吨/公顷 | 2026-9 |
| 1986/1987 | 4 | 吨/公顷 | 2026-9 |
| 1985/1986 | 4 | 吨/公顷 | 2026-9 |
| 1984/1985 | 4 | 吨/公顷 | 2026-9 |
| 1983/1984 | 4.207 | 吨/公顷 | 2026-9 |
| 1982/1983 | 3.717 | 吨/公顷 | 2026-9 |
| 1981/1982 | 3.174 | 吨/公顷 | 2026-9 |
| 1980/1981 | 3.755 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.68 | 吨/公顷 | 2026-9 |
| 1978/1979 | 2 | 吨/公顷 | 2026-9 |
| 1977/1978 | 2 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.515 | 吨/公顷 | 2026-9 |
| 1975/1976 | 2.076 | 吨/公顷 | 2026-9 |
| 1974/1975 | 2.028 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.831 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.954 | 吨/公顷 | 2026-9 |
| 1971/1972 | 2.077 | 吨/公顷 | 2026-9 |
| 1970/1971 | 2.12 | 吨/公顷 | 2026-9 |
| 1969/1970 | 2.039 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.89 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.697 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.533 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.207 | 吨/公顷 | 2026-9 |
| 1964/1965 | 1.297 | 吨/公顷 | 2026-9 |
| 1963/1964 | 1.23 | 吨/公顷 | 2026-9 |
| 1962/1963 | 0.97 | 吨/公顷 | 2026-9 |
| 1961/1962 | 1.012 | 吨/公顷 | 2026-9 |
| 1960/1961 | 0.822 | 吨/公顷 | 2026-9 |