| 序号 | 时间 (年) |
数据 (千公顷) |
|---|---|---|
| 1 | 2021 | |
| 2 | 2020 | |
| 3 | 2019 | |
| 4 | 2018 | |
| 5 | 2017 | |
| 6 | 2016 | |
| 7 | 2015 | 39.92 |
| 8 | 2014 | 39.35 |
| 9 | 2013 | 39.14 |
| 10 | 2012 | 39.42 |
| 11 | 2011 | 39.46 |
| 12 | 2010 | 37.80 |
| 13 | 2009 | 37.29 |
| 14 | 2008 | 36.74 |
| 15 | 2007 | 36.36 |
| 16 | 2006 | 40.20 |
| 17 | 2005 | 47.26 |
| 18 | 2004 | 44.74 |
| 19 | 2003 | 44.21 |
| 20 | 2002 | 42.56 |
| 21 | 2001 | 38.97 |
| 22 | 2000 | 38.60 |
| 23 | 1999 | 38.23 |
| 24 | 1998 | 22.98 |
| 25 | 1995 | 22.89 |
| 26 | 1990 | 14.98 |
| 27 | 1985 | 12.83 |
