| 年度 | 实际值 |
|---|---|
| 1992 | 2284 |
| 1993 | 17697 |
| 1994 | 3529 |
| 1995 | 4101 |
| 1996 | 5807 |
| 1997 | 6532 |
| 1998 | 8025 |
| 1999 | 9041 |
| 2000 | 10134 |
| 2001 | 9283 |
| 2002 | 9848 |
| 2003 | 12754 |
| 2004 | 12077 |
| 2005 | 13644 |
| 2006 | 14182 |
| 2007 | 10660.2 |
| 2008 | 10891.29 |
| 2009 | |
| 2010 | 15192.09 |
| 2011 | 16540 |
| 2012 | 18218 |
| 2013 | 20135 |
| 2014 | 13688 |