| 年度 | 实际值 |
|---|---|
| 1993 | 1390 |
| 1994 | 6730 |
| 1995 | 7066 |
| 1996 | 5562 |
| 1997 | 5142 |
| 1998 | 5582 |
| 1999 | 5600 |
| 2000 | 7199 |
| 2001 | 6340 |
| 2002 | 7138 |
| 2003 | 6142 |
| 2004 | 6864 |
| 2005 | 6984 |
| 2006 | 6390 |
| 2007 | 5898 |
| 2008 | 6124 |
| 2009 | |
| 2010 | 7293 |
| 2011 | 8357 |
| 2012 | 8648 |
| 2013 | 13817 |
| 2014 | 11027 |
| 2015 | 11617 |
| 2016 | 11940 |
| 2017 | 13010 |
| 2018 | 14537 |