| 年度 | 实际值 |
|---|---|
| 1992 | 26830 |
| 1993 | |
| 1994 | |
| 1995 | 27884 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 34598 |
| 2000 | 23994 |
| 2001 | 26213 |
| 2002 | 26484 |
| 2003 | 25409 |
| 2004 | 30036 |
| 2005 | 30786 |
| 2006 | 24761 |
| 2007 | 27382 |
| 2008 | 31955 |
| 2009 | 12141 |
| 2010 | 25680 |
| 2011 | 33903 |
| 2012 | 32405 |
| 2013 | 33058 |
| 2014 | 36251 |
| 2015 | 39751 |
| 2016 | 43925 |