| 年度 | 实际值 |
|---|---|
| 1995 | 20742 |
| 1996 | 9847 |
| 1997 | 9530 |
| 1998 | 34327 |
| 1999 | 24686 |
| 2000 | 42931 |
| 2001 | 45545 |
| 2002 | 45370 |
| 2003 | 36687 |
| 2004 | 27787 |
| 2005 | 42570 |
| 2006 | 97566 |
| 2007 | 214121 |
| 2008 | 225684 |
| 2009 | 240364 |
| 2010 | 269274 |
| 2011 | 639329 |
| 2012 | 586710 |
| 2013 | 486384 |
| 2014 | 480451 |
| 2015 | 246936 |
| 2016 | 427912 |
| 2017 | 499957 |
| 2018 | 526086 |