| 年度 | 数值 | 单位 | 发布时间 |
| 2026/2027 | 0.989 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.5 | 吨/公顷 | 2026-9 |
| 2024/2025 | 0.706 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.5 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.453 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.534 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.18 | 吨/公顷 | 2026-9 |
| 2019/2020 | 0.781 | 吨/公顷 | 2026-9 |
| 2018/2019 | 0.987 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.15 | 吨/公顷 | 2026-9 |
| 2016/2017 | 0.662 | 吨/公顷 | 2026-9 |
| 2015/2016 | 0.485 | 吨/公顷 | 2026-9 |
| 2014/2015 | 0.971 | 吨/公顷 | 2026-9 |
| 2013/2014 | 0.736 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.78 | 吨/公顷 | 2026-9 |
| 2011/2012 | 0.656 | 吨/公顷 | 2026-9 |
| 2010/2011 | 0.741 | 吨/公顷 | 2026-9 |
| 2009/2010 | 0.591 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.404 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.56 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.692 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.625 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.659 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.59 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.379 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.2 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.516 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.516 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.051 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.198 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.172 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.677 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.635 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.543 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.667 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.409 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.441 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.926 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.56 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.803 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.917 | 吨/公顷 | 2026-9 |
| 1985/1986 | 2.028 | 吨/公顷 | 2026-9 |
| 1984/1985 | 2.066 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.032 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.669 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.269 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.924 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.536 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.477 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.736 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.836 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.751 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.86 | 吨/公顷 | 2026-9 |
| 1973/1974 | 2.883 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.992 | 吨/公顷 | 2026-9 |
| 1971/1972 | 2.343 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.841 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.203 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.765 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.081 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.774 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.204 | 吨/公顷 | 2026-9 |
| 1964/1965 | 2.192 | 吨/公顷 | 2026-9 |
| 1963/1964 | 1.989 | 吨/公顷 | 2026-9 |
| 1962/1963 | 2 | 吨/公顷 | 2026-9 |
| 1961/1962 | 2.104 | 吨/公顷 | 2026-9 |
| 1960/1961 | 2.204 | 吨/公顷 | 2026-9 |