| 年度 | 实际值 |
|---|---|
| 1992 | 60150 |
| 1993 | |
| 1994 | |
| 1995 | 49730 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 49557 |
| 2000 | 39730 |
| 2001 | 33650 |
| 2002 | 28800 |
| 2003 | 24020 |
| 2004 | 23740 |
| 2005 | 24820 |
| 2006 | 22590 |
| 2007 | 22220 |
| 2008 | 24140 |
| 2009 | 23620 |
| 2010 | 23640 |
| 2011 | 23310 |
| 2012 | 23260 |
| 2013 | 23070 |
| 2014 | 19750 |
| 2015 | 19620 |
| 2016 | 19870 |