| 年度 | 实际值 |
|---|---|
| 1992 | 36557 |
| 1993 | |
| 1994 | |
| 1995 | 35788 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 37765 |
| 2000 | 38340 |
| 2001 | 36304 |
| 2002 | 35974 |
| 2003 | 33815 |
| 2004 | 34207 |
| 2005 | 34732 |
| 2006 | 35069 |
| 2007 | 34757 |
| 2008 | 31669 |
| 2009 | 33163 |
| 2010 | 32979 |
| 2011 | 33357 |
| 2012 | 33786 |
| 2013 | 34172 |
| 2014 | 32630.31 |
| 2015 | 33270.28 |
| 2016 | 33340 |