| 年度 | 实际值 |
|---|---|
| 1992 | 61170 |
| 1993 | |
| 1994 | |
| 1995 | 61015 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 64260 |
| 2000 | 57802 |
| 2001 | 49342 |
| 2002 | 49603 |
| 2003 | 41096 |
| 2004 | 50386 |
| 2005 | 50139 |
| 2006 | 49731 |
| 2007 | 30370 |
| 2008 | 47490 |
| 2009 | 47240 |
| 2010 | 45256 |
| 2011 | 36807 |
| 2012 | 37304 |
| 2013 | 35389 |
| 2014 | 36257 |
| 2015 | 36426 |
| 2016 | 36426 |