| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 1.249 | 吨/公顷 | 2026-9 |
| 2025/2026 | 1.249 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.242 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.242 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.26 | 吨/公顷 | 2026-9 |
| 2021/2022 | 0.811 | 吨/公顷 | 2026-9 |
| 2020/2021 | 0.785 | 吨/公顷 | 2026-9 |
| 2019/2020 | 0.845 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.016 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.13 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.377 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.55 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.263 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.204 | 吨/公顷 | 2026-9 |
| 2012/2013 | 0.95 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.086 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.117 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.036 | 吨/公顷 | 2026-9 |
| 2008/2009 | 0.88 | 吨/公顷 | 2026-9 |
| 2007/2008 | 0.598 | 吨/公顷 | 2026-9 |
| 2006/2007 | 0.54 | 吨/公顷 | 2026-9 |
| 2005/2006 | 0.503 | 吨/公顷 | 2026-9 |
| 2004/2005 | 0.45 | 吨/公顷 | 2026-9 |
| 2003/2004 | 0.385 | 吨/公顷 | 2026-9 |
| 2002/2003 | 0.34 | 吨/公顷 | 2026-9 |
| 2001/2002 | 0.333 | 吨/公顷 | 2026-9 |
| 2000/2001 | 0.333 | 吨/公顷 | 2026-9 |
| 1999/2000 | 0.478 | 吨/公顷 | 2026-9 |
| 1998/1999 | 0.472 | 吨/公顷 | 2026-9 |
| 1997/1998 | 0.439 | 吨/公顷 | 2026-9 |
| 1996/1997 | 0.439 | 吨/公顷 | 2026-9 |
| 1995/1996 | 0.4 | 吨/公顷 | 2026-9 |
| 1994/1995 | 0.344 | 吨/公顷 | 2026-9 |
| 1993/1994 | 0.349 | 吨/公顷 | 2026-9 |
| 1992/1993 | 0.31 | 吨/公顷 | 2026-9 |
| 1991/1992 | 0.273 | 吨/公顷 | 2026-9 |
| 1990/1991 | 0.417 | 吨/公顷 | 2026-9 |
| 1989/1990 | 0.4 | 吨/公顷 | 2026-9 |
| 1988/1989 | 0.25 | 吨/公顷 | 2026-9 |
| 1987/1988 | 0.295 | 吨/公顷 | 2026-9 |
| 1986/1987 | 0.283 | 吨/公顷 | 2026-9 |
| 1985/1986 | 0.307 | 吨/公顷 | 2026-9 |
| 1984/1985 | 0.335 | 吨/公顷 | 2026-9 |
| 1983/1984 | 0.326 | 吨/公顷 | 2026-9 |
| 1982/1983 | 0.318 | 吨/公顷 | 2026-9 |
| 1981/1982 | 0.295 | 吨/公顷 | 2026-9 |
| 1980/1981 | 0.24 | 吨/公顷 | 2026-9 |
| 1979/1980 | 0.18 | 吨/公顷 | 2026-9 |
| 1978/1979 | 0.203 | 吨/公顷 | 2026-9 |
| 1977/1978 | 0.183 | 吨/公顷 | 2026-9 |
| 1976/1977 | 0.135 | 吨/公顷 | 2026-9 |
| 1975/1976 | 0.13 | 吨/公顷 | 2026-9 |
| 1974/1975 | 0.137 | 吨/公顷 | 2026-9 |
| 1973/1974 | 0.127 | 吨/公顷 | 2026-9 |
| 1972/1973 | 0.173 | 吨/公顷 | 2026-9 |
| 1971/1972 | 0.163 | 吨/公顷 | 2026-9 |
| 1970/1971 | 0.163 | 吨/公顷 | 2026-9 |
| 1969/1970 | 0.164 | 吨/公顷 | 2026-9 |