| 年度 | 实际值 |
|---|---|
| 1992 | 6389 |
| 1993 | |
| 1994 | |
| 1995 | 9663 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 10130 |
| 2000 | 8571 |
| 2001 | 9881 |
| 2002 | 11564 |
| 2003 | 14420 |
| 2004 | 24136 |
| 2005 | 25137 |
| 2006 | 8758 |
| 2007 | 6375 |
| 2008 | 2877 |
| 2009 | 3083 |
| 2010 | 4716 |
| 2011 | 10248 |
| 2012 | 13982 |
| 2013 | 14500 |
| 2014 | 17618 |
| 2015 | 25348 |
| 2016 | 46813 |
| 2017 | 53082 |