| 年度 | 数值 | 单位 | 发布日期 |
|---|
| 2026/2027 | 10 | 千公顷 | 2026-9 |
| 2025/2026 | 10 | 千公顷 | 2026-9 |
| 2024/2025 | 7 | 千公顷 | 2026-9 |
| 2023/2024 | 5 | 千公顷 | 2026-9 |
| 2022/2023 | 6 | 千公顷 | 2026-9 |
| 2021/2022 | 5 | 千公顷 | 2026-9 |
| 2020/2021 | 10 | 千公顷 | 2026-9 |
| 2019/2020 | 10 | 千公顷 | 2026-9 |
| 2018/2019 | 15 | 千公顷 | 2026-9 |
| 2017/2018 | 30 | 千公顷 | 2026-9 |
| 2016/2017 | 30 | 千公顷 | 2026-9 |
| 2015/2016 | 30 | 千公顷 | 2026-9 |
| 2014/2015 | 27 | 千公顷 | 2026-9 |
| 2013/2014 | 29 | 千公顷 | 2026-9 |
| 2012/2013 | 31 | 千公顷 | 2026-9 |
| 2011/2012 | 30 | 千公顷 | 2026-9 |
| 2010/2011 | 31 | 千公顷 | 2026-9 |
| 2009/2010 | 29 | 千公顷 | 2026-9 |
| 2008/2009 | 25 | 千公顷 | 2026-9 |
| 2007/2008 | 22 | 千公顷 | 2026-9 |
| 2006/2007 | 23 | 千公顷 | 2026-9 |
| 2005/2006 | 28 | 千公顷 | 2026-9 |
| 2004/2005 | 25 | 千公顷 | 2026-9 |
| 2003/2004 | 20 | 千公顷 | 2026-9 |
| 2002/2003 | 18 | 千公顷 | 2026-9 |
| 2001/2002 | 25 | 千公顷 | 2026-9 |
| 2000/2001 | 20 | 千公顷 | 2026-9 |
| 1999/2000 | 16 | 千公顷 | 2026-9 |
| 1998/1999 | 12 | 千公顷 | 2026-9 |
| 1997/1998 | 13 | 千公顷 | 2026-9 |
| 1996/1997 | 12 | 千公顷 | 2026-9 |
| 1995/1996 | 12 | 千公顷 | 2026-9 |
| 1994/1995 | 11 | 千公顷 | 2026-9 |
| 1993/1994 | 8 | 千公顷 | 2026-9 |
| 1992/1993 | 13 | 千公顷 | 2026-9 |
| 1991/1992 | 13 | 千公顷 | 2026-9 |
| 1990/1991 | 13 | 千公顷 | 2026-9 |
| 1989/1990 | 10 | 千公顷 | 2026-9 |
| 1988/1989 | 8 | 千公顷 | 2026-9 |
| 1987/1988 | 9 | 千公顷 | 2026-9 |
| 1986/1987 | 9 | 千公顷 | 2026-9 |
| 1985/1986 | 20 | 千公顷 | 2026-9 |
| 1984/1985 | 18 | 千公顷 | 2026-9 |
| 1983/1984 | 18 | 千公顷 | 2026-9 |
| 1982/1983 | 27 | 千公顷 | 2026-9 |
| 1981/1982 | 22 | 千公顷 | 2026-9 |
| 1980/1981 | 23 | 千公顷 | 2026-9 |
| 1979/1980 | 20 | 千公顷 | 2026-9 |
| 1978/1979 | 20 | 千公顷 | 2026-9 |
| 1977/1978 | 17 | 千公顷 | 2026-9 |