| 年度 | 数值 | 单位 | 发布日期 |
| 2026/2027 | 2.671 | 吨/公顷 | 2026-9 |
| 2025/2026 | 2.771 | 吨/公顷 | 2026-9 |
| 2024/2025 | 2.698 | 吨/公顷 | 2026-9 |
| 2023/2024 | 2.25 | 吨/公顷 | 2026-9 |
| 2022/2023 | 2.7 | 吨/公顷 | 2026-9 |
| 2021/2022 | 2.708 | 吨/公顷 | 2026-9 |
| 2020/2021 | 2.4 | 吨/公顷 | 2026-9 |
| 2019/2020 | 2.369 | 吨/公顷 | 2026-9 |
| 2018/2019 | 2.44 | 吨/公顷 | 2026-9 |
| 2017/2018 | 2.524 | 吨/公顷 | 2026-9 |
| 2016/2017 | 2.5 | 吨/公顷 | 2026-9 |
| 2015/2016 | 2.406 | 吨/公顷 | 2026-9 |
| 2014/2015 | 2.55 | 吨/公顷 | 2026-9 |
| 2013/2014 | 2.577 | 吨/公顷 | 2026-9 |
| 2012/2013 | 2.271 | 吨/公顷 | 2026-9 |
| 2011/2012 | 2.089 | 吨/公顷 | 2026-9 |
| 2010/2011 | 2.243 | 吨/公顷 | 2026-9 |
| 2009/2010 | 2.091 | 吨/公顷 | 2026-9 |
| 2008/2009 | 1.832 | 吨/公顷 | 2026-9 |
| 2007/2008 | 1.836 | 吨/公顷 | 2026-9 |
| 2006/2007 | 1.887 | 吨/公顷 | 2026-9 |
| 2005/2006 | 1.73 | 吨/公顷 | 2026-9 |
| 2004/2005 | 2.01 | 吨/公顷 | 2026-9 |
| 2003/2004 | 1.919 | 吨/公顷 | 2026-9 |
| 2002/2003 | 1.667 | 吨/公顷 | 2026-9 |
| 2001/2002 | 1.805 | 吨/公顷 | 2026-9 |
| 2000/2001 | 1.654 | 吨/公顷 | 2026-9 |
| 1999/2000 | 1.513 | 吨/公顷 | 2026-9 |
| 1998/1999 | 1.633 | 吨/公顷 | 2026-9 |
| 1997/1998 | 1.67 | 吨/公顷 | 2026-9 |
| 1996/1997 | 1.496 | 吨/公顷 | 2026-9 |
| 1995/1996 | 1.305 | 吨/公顷 | 2026-9 |
| 1994/1995 | 1.201 | 吨/公顷 | 2026-9 |
| 1993/1994 | 1.3 | 吨/公顷 | 2026-9 |
| 1992/1993 | 1.37 | 吨/公顷 | 2026-9 |
| 1991/1992 | 1.534 | 吨/公顷 | 2026-9 |
| 1990/1991 | 1.659 | 吨/公顷 | 2026-9 |
| 1989/1990 | 1.798 | 吨/公顷 | 2026-9 |
| 1988/1989 | 2.009 | 吨/公顷 | 2026-9 |
| 1987/1988 | 2.062 | 吨/公顷 | 2026-9 |
| 1986/1987 | 1.808 | 吨/公顷 | 2026-9 |
| 1985/1986 | 2.056 | 吨/公顷 | 2026-9 |
| 1984/1985 | 1.772 | 吨/公顷 | 2026-9 |
| 1983/1984 | 2.004 | 吨/公顷 | 2026-9 |
| 1982/1983 | 1.974 | 吨/公顷 | 2026-9 |
| 1981/1982 | 1.844 | 吨/公顷 | 2026-9 |
| 1980/1981 | 1.639 | 吨/公顷 | 2026-9 |
| 1979/1980 | 1.474 | 吨/公顷 | 2026-9 |
| 1978/1979 | 1.643 | 吨/公顷 | 2026-9 |
| 1977/1978 | 1.517 | 吨/公顷 | 2026-9 |
| 1976/1977 | 1.569 | 吨/公顷 | 2026-9 |
| 1975/1976 | 1.447 | 吨/公顷 | 2026-9 |
| 1974/1975 | 1.496 | 吨/公顷 | 2026-9 |
| 1973/1974 | 1.508 | 吨/公顷 | 2026-9 |
| 1972/1973 | 1.47 | 吨/公顷 | 2026-9 |
| 1971/1972 | 1.616 | 吨/公顷 | 2026-9 |
| 1970/1971 | 1.495 | 吨/公顷 | 2026-9 |
| 1969/1970 | 1.406 | 吨/公顷 | 2026-9 |