| 年度 | 实际值 |
|---|---|
| 1993 | 22117 |
| 1994 | 22378 |
| 1995 | 23293 |
| 1996 | 22384 |
| 1997 | 22829 |
| 1998 | 22817 |
| 1999 | 23068 |
| 2000 | 23503 |
| 2001 | 23949 |
| 2002 | 22169 |
| 2003 | 23464 |
| 2004 | 24493 |
| 2005 | 25852 |
| 2006 | 27338 |
| 2007 | 29056 |
| 2008 | 29953 |
| 2009 | |
| 2010 | 33575 |
| 2011 | 35638 |
| 2012 | |
| 2013 | 39694 |
| 2014 | 40715 |
| 2015 | 42499 |
| 2016 | 46791 |
| 2017 | 49747 |
| 2018 | 54134 |