| 年度 | 实际值 |
|---|---|
| 1993 | 11173 |
| 1994 | 11985 |
| 1995 | 16301 |
| 1996 | 15801 |
| 1997 | 9804 |
| 1998 | 10018 |
| 1999 | 10084 |
| 2000 | 10597 |
| 2001 | 10472 |
| 2002 | 9208 |
| 2003 | 10119 |
| 2004 | 9023 |
| 2005 | 9197 |
| 2006 | 9639 |
| 2007 | 10817 |
| 2008 | 11142 |
| 2009 | |
| 2010 | 12563 |
| 2011 | 13061 |
| 2012 | 14800 |
| 2013 | 15510 |
| 2014 | 16845 |
| 2015 | 17691 |
| 2016 | 19834 |
| 2017 | 20836 |
| 2018 | 23482 |