| 年度 | 实际值 |
|---|---|
| 1993 | 7838 |
| 1994 | 5362 |
| 1995 | 3517 |
| 1996 | 3630 |
| 1997 | 3793 |
| 1998 | 3843 |
| 1999 | 3923 |
| 2000 | 4059 |
| 2001 | 3679 |
| 2002 | 3508 |
| 2003 | 3565 |
| 2004 | 3589 |
| 2005 | 3775 |
| 2006 | 3218 |
| 2007 | 3678 |
| 2008 | 4013 |
| 2009 | |
| 2010 | 3501 |
| 2011 | 5569 |
| 2012 | 4078 |
| 2013 | 6907 |
| 2014 | 6907 |
| 2015 | 6632 |
| 2016 | 6701 |
| 2017 | 8919 |
| 2018 | 9578 |