| 年度 | 实际值 |
|---|---|
| 1992 | 61010 |
| 1993 | |
| 1994 | |
| 1995 | 52420 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 46441 |
| 2000 | 37180 |
| 2001 | 32430 |
| 2002 | 29580 |
| 2003 | 24900 |
| 2004 | 24250 |
| 2005 | 24050 |
| 2006 | 24230 |
| 2007 | 23800 |
| 2008 | 24410 |
| 2009 | 23530 |
| 2010 | 23230 |
| 2011 | 23120 |
| 2012 | 22250 |
| 2013 | 22520 |
| 2014 | 20760 |
| 2015 | 21610 |
| 2016 | 22360 |