| 年度 | 实际值 |
|---|---|
| 1992 | 23265 |
| 1993 | |
| 1994 | |
| 1995 | 25824 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 25840 |
| 2000 | 25271 |
| 2001 | 27688 |
| 2002 | 24072 |
| 2003 | 22335 |
| 2004 | 26031 |
| 2005 | 28393 |
| 2006 | 29631 |
| 2007 | 23454 |
| 2008 | 25893 |
| 2009 | 28780 |
| 2010 | 30393 |
| 2011 | 26047 |
| 2012 | 27180 |
| 2013 | 27363 |
| 2014 | 27056 |
| 2015 | 27534 |
| 2016 | 27871 |