| 年度 | 实际值 |
|---|---|
| 1993 | 9561 |
| 1994 | 9732 |
| 1995 | 9701 |
| 1996 | 9019 |
| 1997 | 9572 |
| 1998 | 10405 |
| 1999 | 9400 |
| 2000 | 9500 |
| 2001 | 9224 |
| 2002 | 8656 |
| 2003 | 6389 |
| 2004 | 8668 |
| 2005 | 8862 |
| 2006 | 6799 |
| 2007 | 6363 |
| 2008 | 6820 |
| 2009 | |
| 2010 | 7549 |
| 2011 | 10251 |
| 2012 | 8141 |
| 2013 | 11369 |
| 2014 | 12349 |
| 2015 | 12875 |
| 2016 | 13139 |
| 2017 | 14143 |
| 2018 | 14797 |