| 年度 | 实际值 |
|---|---|
| 1992 | 93294 |
| 1993 | |
| 1994 | |
| 1995 | 83697 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 79920 |
| 2000 | 54533 |
| 2001 | 36880 |
| 2002 | 32451 |
| 2003 | 21637 |
| 2004 | 29197 |
| 2005 | 28171 |
| 2006 | 5007 |
| 2007 | 27929 |
| 2008 | 31431 |
| 2009 | 27995 |
| 2010 | 27017 |
| 2011 | 23972 |
| 2012 | 24098 |
| 2013 | 24175 |
| 2014 | 11978 |
| 2015 | 12769 |
| 2016 | 12775 |