| 年度 | 实际值 |
|---|---|
| 1994 | 26205 |
| 1995 | 26483 |
| 1996 | |
| 1997 | 28229 |
| 1998 | 29068 |
| 1999 | 29703 |
| 2000 | 29189 |
| 2001 | 28540 |
| 2002 | 29189 |
| 2003 | 28236 |
| 2004 | 27635 |
| 2005 | 27031 |
| 2006 | 27094 |
| 2007 | 26742 |
| 2008 | 26524 |
| 2009 | 26093 |
| 2010 | 26550 |
| 2011 | 24474 |
| 2012 | 24553 |
| 2013 | 27315 |
| 2014 | 28192 |
| 2015 | 29046 |
| 2016 | 29319 |