| 年度 | 实际值 |
|---|---|
| 1995 | 4730 |
| 1996 | 2713 |
| 1997 | 7123 |
| 1998 | 9528 |
| 1999 | 19564 |
| 2000 | 19571 |
| 2001 | 28185 |
| 2002 | 24614 |
| 2003 | 26120 |
| 2004 | 29739 |
| 2005 | 18693 |
| 2006 | 5032 |
| 2007 | 8587 |
| 2008 | 35274 |
| 2009 | |
| 2010 | 66938 |
| 2011 | 124421 |
| 2012 | 137985 |
| 2013 | 81144 |
| 2014 | 56746 |
| 2015 | 78252 |
| 2016 | 70819 |
| 2017 | 50380 |
| 2018 | 78898 |