| 序号 | 时间 (年) |
数据 (千公顷) |
|---|---|---|
| 1 | 2022 | |
| 2 | 2021 | |
| 3 | 2020 | |
| 4 | 2019 | |
| 5 | 2018 | |
| 6 | 2017 | |
| 7 | 2016 | 33.78 |
| 8 | 2015 | 33.77 |
| 9 | 2014 | 34.28 |
| 10 | 2013 | 33.98 |
| 11 | 2012 | 34.04 |
| 12 | 2011 | 32.42 |
| 13 | 2010 | 32.36 |
| 14 | 2009 | 31.36 |
| 15 | 2008 | 30.08 |
| 16 | 2007 | 28.63 |
| 17 | 2006 | 26.82 |
| 18 | 2005 | 24.56 |
| 19 | 2004 | 23.56 |
| 20 | 2003 | 22.72 |
| 21 | 2002 | 21.05 |
| 22 | 2001 | 20.69 |
| 23 | 2000 | 19.93 |
| 24 | 1999 | 19.53 |
| 25 | 1998 | 18.88 |
| 26 | 1997 | 19.10 |
| 27 | 1996 | 18.10 |
| 28 | 1995 | 19.29 |
| 29 | 1990 | 13.17 |
| 30 | 1985 | 14.31 |
