| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 8.281 | 吨/公顷 | 2026-9 |
| 2025/2026 | 8.509 | 吨/公顷 | 2026-9 |
| 2024/2025 | 8.205 | 吨/公顷 | 2026-9 |
| 2023/2024 | 8.101 | 吨/公顷 | 2026-9 |
| 2022/2023 | 8.341 | 吨/公顷 | 2026-9 |
| 2021/2022 | 8.356 | 吨/公顷 | 2026-9 |
| 2020/2021 | 8.215 | 吨/公顷 | 2026-9 |
| 2019/2020 | 7.721 | 吨/公顷 | 2026-9 |
| 2018/2019 | 8.253 | 吨/公顷 | 2026-9 |
| 2017/2018 | 7.244 | 吨/公顷 | 2026-9 |
| 2016/2017 | 7.515 | 吨/公顷 | 2026-9 |
| 2015/2016 | 7.912 | 吨/公顷 | 2026-9 |
| 2014/2015 | 7.624 | 吨/公顷 | 2026-9 |
| 2013/2014 | 7.671 | 吨/公顷 | 2026-9 |
| 2012/2013 | 7.766 | 吨/公顷 | 2026-9 |
| 2011/2012 | 7.399 | 吨/公顷 | 2026-9 |
| 2010/2011 | 7.285 | 吨/公顷 | 2026-9 |
| 2009/2010 | 7.398 | 吨/公顷 | 2026-9 |
| 2008/2009 | 7.429 | 吨/公顷 | 2026-9 |
| 2007/2008 | 7.216 | 吨/公顷 | 2026-9 |
| 2006/2007 | 6.843 | 吨/公顷 | 2026-9 |
| 2005/2006 | 6.882 | 吨/公顷 | 2026-9 |
| 2004/2005 | 6.623 | 吨/公顷 | 2026-9 |
| 2003/2004 | 6.818 | 吨/公顷 | 2026-9 |
| 2002/2003 | 6.633 | 吨/公顷 | 2026-9 |
| 2001/2002 | 6.762 | 吨/公顷 | 2026-9 |
| 2000/2001 | 6.683 | 吨/公顷 | 2026-9 |
| 1999/2000 | 6.864 | 吨/公顷 | 2026-9 |
| 1998/1999 | 5.394 | 吨/公顷 | 2026-9 |
| 1997/1998 | 5.073 | 吨/公顷 | 2026-9 |
| 1996/1997 | 5.333 | 吨/公顷 | 2026-9 |
| 1995/1996 | 4.995 | 吨/公顷 | 2026-9 |
| 1994/1995 | 5.657 | 吨/公顷 | 2026-9 |
| 1993/1994 | 5.787 | 吨/公顷 | 2026-9 |
| 1992/1993 | 5.438 | 吨/公顷 | 2026-9 |
| 1991/1992 | 5.018 | 吨/公顷 | 2026-9 |
| 1990/1991 | 5.152 | 吨/公顷 | 2026-9 |
| 1989/1990 | 4.751 | 吨/公顷 | 2026-9 |
| 1988/1989 | 4.147 | 吨/公顷 | 2026-9 |
| 1987/1988 | 4.593 | 吨/公顷 | 2026-9 |
| 1986/1987 | 4.298 | 吨/公顷 | 2026-9 |
| 1985/1986 | 3.737 | 吨/公顷 | 2026-9 |
| 1984/1985 | 4.59 | 吨/公顷 | 2026-9 |
| 1983/1984 | 3.511 | 吨/公顷 | 2026-9 |
| 1982/1983 | 4.153 | 吨/公顷 | 2026-9 |
| 1981/1982 | 4.347 | 吨/公顷 | 2026-9 |
| 1980/1981 | 4.385 | 吨/公顷 | 2026-9 |
| 1979/1980 | 4.275 | 吨/公顷 | 2026-9 |
| 1978/1979 | 4.24 | 吨/公顷 | 2026-9 |
| 1977/1978 | 4.376 | 吨/公顷 | 2026-9 |
| 1976/1977 | 4.341 | 吨/公顷 | 2026-9 |
| 1975/1976 | 4.017 | 吨/公顷 | 2026-9 |
| 1974/1975 | 3.704 | 吨/公顷 | 2026-9 |
| 1973/1974 | 4.091 | 吨/公顷 | 2026-9 |
| 1972/1973 | 4.214 | 吨/公顷 | 2026-9 |
| 1971/1972 | 4.02 | 吨/公顷 | 2026-9 |
| 1970/1971 | 4.193 | 吨/公顷 | 2026-9 |
| 1969/1970 | 4.027 | 吨/公顷 | 2026-9 |
| 1968/1969 | 3.776 | 吨/公顷 | 2026-9 |
| 1967/1968 | 4.308 | 吨/公顷 | 2026-9 |
| 1966/1967 | 3.906 | 吨/公顷 | 2026-9 |
| 1965/1966 | 3.88 | 吨/公顷 | 2026-9 |
| 1964/1965 | 4.281 | 吨/公顷 | 2026-9 |
| 1963/1964 | 3.699 | 吨/公顷 | 2026-9 |
| 1962/1963 | 4.31 | 吨/公顷 | 2026-9 |
| 1961/1962 | 4.086 | 吨/公顷 | 2026-9 |
| 1960/1961 | 4.163 | 吨/公顷 | 2026-9 |