| 年度 | 实际值 |
|---|---|
| 1993 | 10488 |
| 1994 | 10891 |
| 1995 | 11204 |
| 1996 | 11525 |
| 1997 | 12025 |
| 1998 | 11756 |
| 1999 | 9180 |
| 2000 | 9382 |
| 2001 | 9286 |
| 2002 | 9365 |
| 2003 | 10692 |
| 2004 | 10480 |
| 2005 | 10494 |
| 2006 | 10719 |
| 2007 | 11137 |
| 2008 | 11557 |
| 2009 | 11613 |
| 2010 | 12165 |
| 2011 | 12745 |
| 2012 | 14457 |
| 2013 | 16175 |
| 2014 | 17518 |
| 2015 | 20172 |
| 2016 | 21836 |
| 2017 | 22900 |
| 2018 | 25776 |