| 年度 | 数值 | 单位 | 发布日期 |
| 2025/2026 | 2.233 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2.233 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.233 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.233 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.233 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2.27 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.273 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.36 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.167 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.6 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.617 | 吨/公顷 | 2026-9 |
| 2013/2014 | 2.76 | 吨/公顷 | 2026-9 |
| 2012/2013 | 2.72 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.733 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.752 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.752 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.727 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.855 | 吨/公顷 | 2026-9 |
| 2006/2007 | 2.103 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.878 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.637 | 吨/公顷 | 2026-9 |
| 2003/2004 | 2.85 | 吨/公顷 | 2026-9 |
| 2002/2003 | 2.661 | 吨/公顷 | 2026-9 |
| 2001/2002 | 2.743 | 吨/公顷 | 2026-9 |
| 2000/2001 | 2.737 | 吨/公顷 | 2026-9 |
| 1999/2000 | 2.619 | 吨/公顷 | 2026-9 |
| 1998/1999 | 2.506 | 吨/公顷 | 2026-9 |
| 1997/1998 | 2.785 | 吨/公顷 | 2026-9 |
| 1996/1997 | 2.386 | 吨/公顷 | 2026-9 |
| 1995/1996 | 2.282 | 吨/公顷 | 2026-9 |
| 1994/1995 | 2.083 | 吨/公顷 | 2026-9 |
| 1993/1994 | 2.33 | 吨/公顷 | 2026-9 |
| 1992/1993 | 2.283 | 吨/公顷 | 2026-9 |
| 1991/1992 | 2.141 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.859 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.873 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.754 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.488 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.75 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.906 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.725 | 吨/公顷 | 2026-9 |
| 1983/1984 | 2.243 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.66 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.818 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.698 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.403 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.396 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.31 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.39 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.231 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.175 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.245 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.071 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.004 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.94 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.853 | 吨/公顷 | 2026-9 |