| 年度 | 数值 | 单位 | 发布时间 |
| 2026/2027 | 4.417 | 吨/公顷 | 2026-9 |
| 2025/2026 | 4.426 | 吨/公顷 | 2026-9 |
| 2024/2025 | 4.38 | 吨/公顷 | 2026-9 |
| 2023/2024 | 4.344 | 吨/公顷 | 2026-9 |
| 2022/2023 | 4.534 | 吨/公顷 | 2026-9 |
| 2021/2022 | 4.417 | 吨/公顷 | 2026-9 |
| 2020/2021 | 4.383 | 吨/公顷 | 2026-9 |
| 2019/2020 | 3.704 | 吨/公顷 | 2026-9 |
| 2018/2019 | 4.324 | 吨/公顷 | 2026-9 |
| 2017/2018 | 4.444 | 吨/公顷 | 2026-9 |
| 2016/2017 | 4.444 | 吨/公顷 | 2026-9 |
| 2015/2016 | 4.312 | 吨/公顷 | 2026-9 |
| 2014/2015 | 4.364 | 吨/公顷 | 2026-9 |
| 2013/2014 | 4.375 | 吨/公顷 | 2026-9 |
| 2012/2013 | 4.259 | 吨/公顷 | 2026-9 |
| 2011/2012 | 4.257 | 吨/公顷 | 2026-9 |
| 2010/2011 | 4.2 | 吨/公顷 | 2026-9 |
| 2009/2010 | 4.1 | 吨/公顷 | 2026-9 |
| 2008/2009 | 4.206 | 吨/公顷 | 2026-9 |
| 2007/2008 | 3.85 | 吨/公顷 | 2026-9 |
| 2006/2007 | 3.8 | 吨/公顷 | 2026-9 |
| 2005/2006 | 3.636 | 吨/公顷 | 2026-9 |
| 2004/2005 | 3.732 | 吨/公顷 | 2026-9 |
| 2003/2004 | 3.694 | 吨/公顷 | 2026-9 |
| 2002/2003 | 3.748 | 吨/公顷 | 2026-9 |
| 2001/2002 | 3.814 | 吨/公顷 | 2026-9 |
| 2000/2001 | 3.884 | 吨/公顷 | 2026-9 |
| 1999/2000 | 3.391 | 吨/公顷 | 2026-9 |
| 1998/1999 | 3.333 | 吨/公顷 | 2026-9 |
| 1997/1998 | 3.426 | 吨/公顷 | 2026-9 |
| 1996/1997 | 3.25 | 吨/公顷 | 2026-9 |
| 1995/1996 | 3.246 | 吨/公顷 | 2026-9 |
| 1994/1995 | 3.167 | 吨/公顷 | 2026-9 |
| 1993/1994 | 2.71 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.764 | 吨/公顷 | 2026-9 |
| 1991/1992 | 2.667 | 吨/公顷 | 2026-9 |
| 1990/1991 | 2.815 | 吨/公顷 | 2026-9 |
| 1989/1990 | 2.929 | 吨/公顷 | 2026-9 |
| 1988/1989 | 2.625 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.56 | 吨/公顷 | 2026-9 |
| 1986/1987 | 2.374 | 吨/公顷 | 2026-9 |
| 1985/1986 | 2.361 | 吨/公顷 | 2026-9 |
| 1984/1985 | 2.225 | 吨/公顷 | 2026-9 |
| 1983/1984 | 2.164 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.865 | 吨/公顷 | 2026-9 |
| 1981/1982 | 2.486 | 吨/公顷 | 2026-9 |
| 1980/1981 | 2.207 | 吨/公顷 | 2026-9 |
| 1979/1980 | 2.317 | 吨/公顷 | 2026-9 |
| 1978/1979 | 2.014 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.392 | 吨/公顷 | 2026-9 |
| 1976/1977 | 2.082 | 吨/公顷 | 2026-9 |
| 1975/1976 | 2.182 | 吨/公顷 | 2026-9 |
| 1974/1975 | 2.016 | 吨/公顷 | 2026-9 |
| 1973/1974 | 2.251 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.319 | 吨/公顷 | 2026-9 |
| 1971/1972 | 2.257 | 吨/公顷 | 2026-9 |
| 1970/1971 | 2.338 | 吨/公顷 | 2026-9 |
| 1969/1970 | 2.5 | 吨/公顷 | 2026-9 |
| 1968/1969 | 2.487 | 吨/公顷 | 2026-9 |
| 1967/1968 | 2.199 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.902 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.817 | 吨/公顷 | 2026-9 |
| 1964/1965 | 1.728 | 吨/公顷 | 2026-9 |
| 1963/1964 | 2.211 | 吨/公顷 | 2026-9 |
| 1962/1963 | 2.072 | 吨/公顷 | 2026-9 |
| 1961/1962 | 2.007 | 吨/公顷 | 2026-9 |
| 1960/1961 | 1.909 | 吨/公顷 | 2026-9 |