| 年度 | 实际值 |
|---|---|
| 1992 | 51492 |
| 1993 | |
| 1994 | 50000 |
| 1995 | 48762 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 51043 |
| 2000 | 51234 |
| 2001 | 48438 |
| 2002 | 47779 |
| 2003 | 46223 |
| 2004 | 48176 |
| 2005 | 42082 |
| 2006 | 45487 |
| 2007 | 46553 |
| 2008 | 47388 |
| 2009 | 48810 |
| 2010 | 49103 |
| 2011 | 48729 |
| 2012 | 49100 |
| 2013 | 47782 |
| 2014 | 48351 |
| 2015 | 48860.65 |
| 2016 | 47881 |