| 序号 | 时间 (年) |
数据 (平方公里) |
|---|---|---|
| 1 | 2019 | |
| 2 | 2018 | |
| 3 | 2016 | |
| 4 | 2015 | |
| 5 | 2014 | |
| 6 | 2013 | |
| 7 | 2012 | |
| 8 | 2011 | |
| 9 | 2010 | |
| 10 | 2009 | |
| 11 | 2008 | 18132.00 |
| 12 | 2007 | 17653.00 |
| 13 | 2006 | 17801.00 |
| 14 | 2005 | 17807.00 |
| 15 | 2004 | 17673.00 |
| 16 | 2003 | 17711.00 |
| 17 | 2002 | 17463.00 |
| 18 | 2001 | 16729.00 |
| 19 | 2000 | 16719.00 |
| 20 | 1999 | 16720.00 |
| 21 | 1998 | 16347.00 |
| 22 | 1997 | 16163.00 |
| 23 | 1996 | 46175.00 |
| 24 | 1995 | 43933.00 |
| 25 | 1994 | 43905.00 |
| 26 | 1993 | 39062.00 |
| 27 | 1991 | 31932.00 |
| 28 | 1990 | 31931.00 |
| 29 | 1989 | 31939.00 |
| 30 | 1988 | 32833.00 |
| 31 | 1987 | 27238.00 |
| 32 | 1986 | 23852.00 |
| 33 | 1985 | 18869.00 |
| 34 | 1984 | 13545.00 |
