| 年度 | 实际值 |
|---|---|
| 1993 | 13312 |
| 1994 | 13535 |
| 1995 | 13840 |
| 1996 | 13790 |
| 1997 | 14400 |
| 1998 | 14327 |
| 1999 | 14453 |
| 2000 | 14860 |
| 2001 | 15772 |
| 2002 | 13371 |
| 2003 | 13452 |
| 2004 | 13953 |
| 2005 | 15008 |
| 2006 | 15451 |
| 2007 | 15018 |
| 2008 | 16260 |
| 2009 | |
| 2010 | 17696 |
| 2011 | 18310 |
| 2012 | 21593 |
| 2013 | 24113 |
| 2014 | 24946 |
| 2015 | 26270 |
| 2016 | 27675 |
| 2017 | 30867 |
| 2018 | 34578 |