| 年度 | 实际值 |
|---|---|
| 1992 | 4988 |
| 1993 | |
| 1994 | |
| 1995 | 6062 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 20493 |
| 2000 | 19772 |
| 2001 | 21071 |
| 2002 | 22361 |
| 2003 | 23294 |
| 2004 | 19862 |
| 2005 | 18204 |
| 2006 | 20428 |
| 2007 | 19643 |
| 2008 | 12394 |
| 2009 | 14500 |
| 2010 | 20400 |
| 2011 | 20400 |
| 2012 | 47600 |
| 2013 | 56334 |
| 2014 | 61404 |
| 2015 | 84372 |
| 2016 | 118007 |
| 2017 | 144666 |