| 序号 | 时间 (年) |
数据 (万公顷) |
|---|---|---|
| 1 | 2024 | |
| 2 | 2023 | |
| 3 | 2022 | |
| 4 | 2021 | |
| 5 | 2020 | |
| 6 | 2019 | |
| 7 | 2018 | 24.12 |
| 8 | 2017 | 25.99 |
| 9 | 2016 | 25.87 |
| 10 | 2015 | 25.73 |
| 11 | 2014 | 25.35 |
| 12 | 2013 | 25.26 |
| 13 | 2012 | 24.61 |
| 14 | 2011 | 24.43 |
| 15 | 2010 | 23.10 |
| 16 | 2009 | 20.92 |
| 17 | 2008 | 20.91 |
| 18 | 2007 | 20.88 |
| 19 | 2006 | 20.79 |
| 20 | 2005 | 19.75 |
| 21 | 2004 | 19.92 |
| 22 | 2003 | 20.79 |
| 23 | 2002 | 21.45 |
| 24 | 2001 | 22.69 |
| 25 | 2000 | 23.40 |
| 26 | 1999 | 24.26 |
| 27 | 1998 | 24.33 |
| 28 | 1997 | 22.97 |
| 29 | 1996 | 22.99 |
| 30 | 1995 | 22.77 |
| 31 | 1994 | 23.48 |
| 32 | 1993 | 22.16 |
| 33 | 1992 | 23.14 |
| 34 | 1991 | 23.60 |
| 35 | 1990 | 23.99 |
| 36 | 1985 | 22.23 |
| 37 | 1980 | 24.18 |
| 38 | 1978 | 23.71 |
| 39 | 1965 | 24.61 |
| 40 | 1958 | 23.26 |
| 41 | 1952 | 21.30 |
| 42 | 1949 | 20.09 |
