| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 1.633 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.695 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.636 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.594 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.599 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.63 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.542 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.472 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.449 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.66 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.587 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.704 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.712 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.55 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.802 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.599 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.616 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.586 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.782 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.645 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.613 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.687 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.19 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.526 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.8 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.882 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.911 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.732 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.45 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.747 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.805 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.725 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.623 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.161 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.709 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.397 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.507 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.79 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.71 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.761 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.775 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.702 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.776 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.518 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.537 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.423 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.225 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.477 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.496 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.405 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.325 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.448 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.43 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.341 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.427 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.208 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.313 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.32 | 吨/公顷 | 2026-9 |
| 1968/1969 | 1.377 | 吨/公顷 | 2026-9 |
| 1967/1968 | 1.348 | 吨/公顷 | 2026-9 |
| 1966/1967 | 1.178 | 吨/公顷 | 2026-9 |
| 1965/1966 | 1.25 | 吨/公顷 | 2026-9 |
| 1964/1965 | 1.106 | 吨/公顷 | 2026-9 |