| 年度 | 实际值 |
|---|---|
| 1993 | 4709 |
| 1994 | 4867 |
| 1995 | 4940 |
| 1996 | 4823 |
| 1997 | 4485 |
| 1998 | 2717 |
| 1999 | 2731 |
| 2000 | 2634 |
| 2001 | 3832 |
| 2002 | 3638 |
| 2003 | 3823 |
| 2004 | 5163 |
| 2005 | 5617 |
| 2006 | 6094 |
| 2007 | 6382 |
| 2008 | 6871 |
| 2009 | |
| 2010 | 7291 |
| 2011 | 8279 |
| 2012 | 11626 |
| 2013 | 12168 |
| 2014 | 12717 |
| 2015 | 13174 |
| 2016 | 13929 |
| 2017 | 16141 |
| 2018 | 17762 |