| 年度 | 实际值 |
|---|---|
| 1993 | 4590 |
| 1994 | 4644 |
| 1995 | 4859 |
| 1996 | 5073 |
| 1997 | 5113 |
| 1998 | 5168 |
| 1999 | 5368 |
| 2000 | 5395 |
| 2001 | 5582 |
| 2002 | 4468 |
| 2003 | 4263 |
| 2004 | 3397 |
| 2005 | 3630 |
| 2006 | 3617 |
| 2007 | 5225 |
| 2008 | 5255 |
| 2009 | |
| 2010 | 5587 |
| 2011 | 7014 |
| 2012 | 5778 |
| 2013 | 5855 |
| 2014 | 5690 |
| 2015 | 5769 |
| 2016 | 5916 |
| 2017 | 5700 |
| 2018 | 5548 |