| 年度 | 实际值 |
|---|---|
| 1993 | 5894 |
| 1994 | 6185 |
| 1995 | 6174 |
| 1996 | 6191 |
| 1997 | 5448 |
| 1998 | 4617 |
| 1999 | 5539 |
| 2000 | 4645 |
| 2001 | 4496 |
| 2002 | 3925 |
| 2003 | 3829 |
| 2004 | 4013 |
| 2005 | 3827 |
| 2006 | 3731 |
| 2007 | 3830 |
| 2008 | 3851 |
| 2009 | |
| 2010 | 3956 |
| 2011 | 4000 |
| 2012 | 4176 |
| 2013 | 4319 |
| 2014 | 4414 |
| 2015 | 6443 |
| 2016 | 6933 |
| 2017 | 7464 |
| 2018 | 7933 |