| 年度 | 实际值 |
|---|---|
| 1992 | 46713 |
| 1993 | |
| 1994 | |
| 1995 | 46153 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 50462 |
| 2000 | 49380 |
| 2001 | 48447 |
| 2002 | 48510 |
| 2003 | 46107 |
| 2004 | 47351 |
| 2005 | 47378 |
| 2006 | 47323 |
| 2007 | 44081 |
| 2008 | 40366 |
| 2009 | 40835 |
| 2010 | 39075 |
| 2011 | 40160 |
| 2012 | 40900 |
| 2013 | 40806 |
| 2014 | 40042 |
| 2015 | 39618 |
| 2016 | 37424 |