| 年度 | 实际值 |
|---|---|
| 1992 | 50681 |
| 1993 | |
| 1994 | |
| 1995 | 57051 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 61790 |
| 2000 | 62276 |
| 2001 | 60321 |
| 2002 | 53641 |
| 2003 | 53772 |
| 2004 | 55736 |
| 2005 | 55766 |
| 2006 | 56428 |
| 2007 | 41289 |
| 2008 | 40799 |
| 2009 | 41576 |
| 2010 | 41577 |
| 2011 | 41827 |
| 2012 | 42053 |
| 2013 | 41644 |
| 2014 | 41777 |
| 2015 | 40827.6 |
| 2016 | 41628 |