| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 1.082 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.183 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.232 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.269 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.358 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.163 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.22 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.16 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.265 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.297 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.266 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.122 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.228 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.25 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.363 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.272 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.277 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.235 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.274 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.408 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.294 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.327 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.408 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.245 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.116 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.208 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.105 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.061 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.126 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.16 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.243 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.959 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.28 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.112 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.256 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.198 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.141 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.099 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.137 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.29 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.006 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.157 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.112 | 吨/公顷 | 2026-9 |
| 1983/1984 | 0.939 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.093 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.036 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.758 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.009 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.772 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.932 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.847 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.82 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.804 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.939 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.931 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.828 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.818 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.825 | 吨/公顷 | 2026-9 |