| 年度 | 实际值 |
|---|---|
| 1993 | 4628 |
| 1994 | 942 |
| 1995 | 4747 |
| 1996 | 4798 |
| 1997 | 4927 |
| 1998 | 4983 |
| 1999 | 4786 |
| 2000 | 4065 |
| 2001 | 4045 |
| 2002 | 4146 |
| 2003 | 4087 |
| 2004 | 3824 |
| 2005 | 3440 |
| 2006 | 3831 |
| 2007 | 5047 |
| 2008 | 4953 |
| 2009 | |
| 2010 | 5119 |
| 2011 | 5878 |
| 2012 | 5650 |
| 2013 | 5939 |
| 2014 | 13912 |
| 2015 | 14413 |
| 2016 | 6561 |
| 2017 | 6829 |
| 2018 | 6904 |