| 年度 | 实际值 |
|---|---|
| 1992 | 20327 |
| 1993 | |
| 1994 | |
| 1995 | 5409 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 1016 |
| 2000 | 22827 |
| 2001 | 3700 |
| 2002 | 3700 |
| 2003 | 38612 |
| 2004 | 34136 |
| 2005 | 19539 |
| 2006 | 7678 |
| 2007 | 33911 |
| 2008 | 34325 |
| 2009 | 34848.8 |
| 2010 | 35199 |
| 2011 | 21485.5 |
| 2012 | 38673.9 |
| 2013 | 46061 |
| 2014 | 47563 |
| 2015 | 24058.9 |
| 2016 | 46728 |