| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 1.786 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2.024 | 吨/公顷 | 2026-9 |
| 2024/2025 | 1.75 | 吨/公顷 | 2026-9 |
| 2023/2024 | 1.978 | 吨/公顷 | 2026-9 |
| 2022/2023 | 1.755 | 吨/公顷 | 2026-9 |
| 2021/2022 | 1.633 | 吨/公顷 | 2026-9 |
| 2020/2021 | 1.729 | 吨/公顷 | 2026-9 |
| 2019/2020 | 1.688 | 吨/公顷 | 2026-9 |
| 2018/2019 | 1.75 | 吨/公顷 | 2026-9 |
| 2017/2018 | 1.678 | 吨/公顷 | 2026-9 |
| 2016/2017 | 1.714 | 吨/公顷 | 2026-9 |
| 2015/2016 | 1.597 | 吨/公顷 | 2026-9 |
| 2014/2015 | 1.627 | 吨/公顷 | 2026-9 |
| 2013/2014 | 1.786 | 吨/公顷 | 2026-9 |
| 2012/2013 | 1.983 | 吨/公顷 | 2026-9 |
| 2011/2012 | 1.312 | 吨/公顷 | 2026-9 |
| 2010/2011 | 1.528 | 吨/公顷 | 2026-9 |
| 2009/2010 | 1.686 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.558 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.596 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.511 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.521 | 吨/公顷 | 2026-9 |
| 2004/2005 | 1.517 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.429 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.21 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.519 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.718 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.383 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.409 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.489 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.4 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.262 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.274 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.278 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.308 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.392 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.247 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.177 | 吨/公顷 | 2026-9 |
| 1988/1989 | 1.212 | 吨/公顷 | 2026-9 |
| 1987/1988 | 1.222 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.333 | 吨/公顷 | 2026-9 |
| 1985/1986 | 1.512 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.375 | 吨/公顷 | 2026-9 |
| 1983/1984 | 1.333 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.111 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.553 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.5 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.447 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.595 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.895 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.368 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.333 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.25 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.25 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1 | 吨/公顷 | 2026-9 |