| 年度 | 实际值 |
|---|---|
| 1992 | 8960 |
| 1993 | 12765 |
| 1994 | 13914 |
| 1995 | 13826 |
| 1996 | 19780 |
| 1997 | |
| 1998 | |
| 1999 | 6126 |
| 2000 | 7201 |
| 2001 | 7542 |
| 2002 | 7493 |
| 2003 | 9719 |
| 2004 | 15161 |
| 2005 | 15859 |
| 2006 | 13698 |
| 2007 | 12491 |
| 2008 | 15220 |
| 2009 | 19157 |
| 2010 | 23309 |
| 2011 | 28797 |
| 2012 | 54243 |
| 2013 | 72644 |
| 2014 | 71722 |
| 2015 | 77397 |