| 年度 | 实际值 |
|---|---|
| 1992 | 2914 |
| 1993 | |
| 1994 | |
| 1995 | 3333 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 15249 |
| 2000 | 17314 |
| 2001 | 18123 |
| 2002 | 22526 |
| 2003 | 26174 |
| 2004 | 23649 |
| 2005 | 30649 |
| 2006 | 43476 |
| 2007 | 65641 |
| 2008 | 73781 |
| 2009 | 108798 |
| 2010 | 131246 |
| 2011 | 178357 |
| 2012 | 200830 |
| 2013 | 231301 |
| 2014 | 240066 |
| 2015 | 281016 |
| 2016 | 293956 |