| 序号 | 时间 (年) |
数据 (千公顷) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 20.59 |
| 8 | 2015 | 20.43 |
| 9 | 2014 | 20.12 |
| 10 | 2013 | 20.11 |
| 11 | 2012 | 20.54 |
| 12 | 2011 | 21.20 |
| 13 | 2010 | 20.86 |
| 14 | 2009 | 20.77 |
| 15 | 2008 | 20.03 |
| 16 | 2007 | 22.40 |
| 17 | 2006 | 22.68 |
| 18 | 2005 | 23.03 |
| 19 | 2004 | 23.10 |
| 20 | 2003 | 24.76 |
| 21 | 2002 | 27.94 |
| 22 | 2001 | 29.41 |
| 23 | 2000 | 31.67 |
| 24 | 1999 | 35.85 |
| 25 | 1998 | 40.94 |
| 26 | 1997 | 43.11 |
| 27 | 1996 | 43.36 |
| 28 | 1995 | 43.00 |
| 29 | 1994 | 43.30 |
| 30 | 1990 | 44.44 |
| 31 | 1985 | 45.20 |
| 32 | 1980 | 46.63 |
| 33 | 1978 | 47.76 |
