| 年度 | 实际值 |
|---|---|
| 1992 | 53994 |
| 1993 | |
| 1994 | |
| 1995 | 55901 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 52406 |
| 2000 | 52370 |
| 2001 | 51015 |
| 2002 | 49668 |
| 2003 | 48292 |
| 2004 | 48507 |
| 2005 | 49701 |
| 2006 | 49560 |
| 2007 | 50475 |
| 2008 | 48103 |
| 2009 | 50607 |
| 2010 | 50244 |
| 2011 | 50784 |
| 2012 | 51108 |
| 2013 | 51935 |
| 2014 | 48010 |
| 2015 | 48330 |
| 2016 | 48440 |