| 年度 | 实际值 |
|---|---|
| 1993 | 4050 |
| 1994 | 52745 |
| 1995 | 4105 |
| 1996 | 4105 |
| 1997 | 4681 |
| 1998 | 3514 |
| 1999 | 3890 |
| 2000 | 3792 |
| 2001 | 3802 |
| 2002 | 3912 |
| 2003 | 4098 |
| 2004 | 4101 |
| 2005 | 3174 |
| 2006 | 3274 |
| 2007 | 3269 |
| 2008 | 5599 |
| 2009 | |
| 2010 | 6577 |
| 2011 | 7802 |
| 2012 | 7563 |
| 2013 | 7559 |
| 2014 | 7625 |
| 2015 | 7920 |
| 2016 | 3029 |
| 2017 | 4030 |
| 2018 | 4032 |