| 年度 | 实际值 |
|---|---|
| 1994 | 22603 |
| 1995 | 24393 |
| 1996 | 29331 |
| 1997 | 23631 |
| 1998 | 16431 |
| 1999 | 26902 |
| 2000 | 26643 |
| 2001 | 25881 |
| 2002 | 24448 |
| 2003 | 21416 |
| 2004 | 28061 |
| 2005 | 30024 |
| 2006 | 31237 |
| 2007 | 39845 |
| 2008 | 30910 |
| 2009 | 30497 |
| 2010 | 34333 |
| 2011 | 39732 |
| 2012 | 44333 |
| 2013 | 47460 |
| 2014 | 47778 |
| 2015 | 48876 |
| 2016 | 44868 |
| 2017 | 29848 |
| 2018 | 32815 |