| 年度 | 实际值 |
|---|---|
| 1992 | 1732 |
| 1993 | 2707 |
| 1994 | 3559 |
| 1995 | 4041 |
| 1996 | 4077 |
| 1997 | 2093 |
| 1998 | 1899 |
| 1999 | 1911 |
| 2000 | 11384 |
| 2001 | 12415 |
| 2002 | 11583 |
| 2003 | 10008 |
| 2004 | 11751 |
| 2005 | 11942 |
| 2006 | 12142 |
| 2007 | 12614.76 |
| 2008 | 12512.53 |
| 2009 | |
| 2010 | 19688.57 |
| 2011 | 24273 |
| 2012 | 28755 |
| 2013 | 35893 |
| 2014 | 25938 |