| 年度 | 实际值 |
|---|---|
| 1992 | 34153 |
| 1993 | |
| 1994 | |
| 1995 | 25861 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 26241 |
| 2000 | 25011.24 |
| 2001 | 21036 |
| 2002 | 20949 |
| 2003 | 18211 |
| 2004 | 21008 |
| 2005 | 21029 |
| 2006 | 18604.726 |
| 2007 | 15604 |
| 2008 | 12503 |
| 2009 | 12285 |
| 2010 | 12297 |
| 2011 | 10297 |
| 2012 | 9602 |
| 2013 | 6361 |
| 2014 | 5848 |
| 2015 | 6029 |
| 2016 | 5807 |