| 年度 | 实际值 |
|---|---|
| 1992 | 49874 |
| 1993 | |
| 1994 | |
| 1995 | 28823 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 41246 |
| 2000 | 44745 |
| 2001 | 30751 |
| 2002 | 35938 |
| 2003 | 25962 |
| 2004 | 31432 |
| 2005 | 38391 |
| 2006 | 45274 |
| 2007 | 49851 |
| 2008 | 44207 |
| 2009 | 46203 |
| 2010 | 49011 |
| 2011 | 52082 |
| 2012 | 46960 |
| 2013 | 40117 |
| 2014 | 40387 |
| 2015 | 54054 |
| 2016 | 57785 |