| 年度 | 实际值 |
|---|---|
| 1992 | 5828 |
| 1993 | |
| 1994 | |
| 1995 | 15000 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 28383 |
| 2000 | 28432 |
| 2001 | 32191 |
| 2002 | 27426 |
| 2003 | 30360 |
| 2004 | 30577 |
| 2005 | 34923 |
| 2006 | 17189 |
| 2007 | 25951 |
| 2008 | 27571 |
| 2009 | 35619 |
| 2010 | 43832 |
| 2011 | 59086 |
| 2012 | 74525 |
| 2013 | 106647 |
| 2014 | 139524 |
| 2015 | 142352 |
| 2016 | 171906 |
| 2017 | 189541 |