| 年度 | 实际值 |
|---|---|
| 1993 | 14457 |
| 1994 | 15372 |
| 1995 | 15750 |
| 1996 | 13449 |
| 1997 | 13876 |
| 1998 | 13638 |
| 1999 | 14446 |
| 2000 | 14514 |
| 2001 | 15626 |
| 2002 | 15305 |
| 2003 | 13026 |
| 2004 | 12990 |
| 2005 | 12905 |
| 2006 | 13972 |
| 2007 | 18773 |
| 2008 | 19222 |
| 2009 | |
| 2010 | 21669 |
| 2011 | 21961 |
| 2012 | 23122 |
| 2013 | 27059 |
| 2014 | 25523 |
| 2015 | 29579 |
| 2016 | 31781 |
| 2017 | 34487 |
| 2018 | 37438 |