| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 3.703 | 吨/公顷 | 2026-9 |
| 2025/2026 | 3.892 | 吨/公顷 | 2026-9 |
| 2024/2025 | 3.659 | 吨/公顷 | 2026-9 |
| 2023/2024 | 3.182 | 吨/公顷 | 2026-9 |
| 2022/2023 | 3.289 | 吨/公顷 | 2026-9 |
| 2021/2022 | 3.001 | 吨/公顷 | 2026-9 |
| 2020/2021 | 3.185 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.831 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.824 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.798 | 吨/公顷 | 2026-9 |
| 2016/2017 | 3.016 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2.75 | 吨/公顷 | 2026-9 |
| 2014/2015 | 2.672 | 吨/公顷 | 2026-9 |
| 2013/2014 | 2.674 | 吨/公顷 | 2026-9 |
| 2012/2013 | 2.589 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.423 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.277 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.366 | 吨/公顷 | 2026-9 |
| 2008/2009 | 2.38 | 吨/公顷 | 2026-9 |
| 2007/2008 | 2.339 | 吨/公顷 | 2026-9 |
| 2006/2007 | 2.338 | 吨/公顷 | 2026-9 |
| 2005/2006 | 2.08 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.013 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.76 | 吨/公顷 | 2026-9 |
| 2002/2003 | 2.194 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.983 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.962 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.852 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.817 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.844 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.601 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.582 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.393 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.332 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.121 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.477 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.372 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.238 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.274 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.49 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.398 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.372 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.537 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.297 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.05 | 吨/公顷 | 2026-9 |
| 1981/1982 | 0.973 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.935 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.832 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.757 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.719 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.709 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.817 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.835 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.881 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.68 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.727 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.775 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.732 | 吨/公顷 | 2026-9 |