| 年度 | 实际值 |
|---|---|
| 1994 | 16424 |
| 1995 | 16183 |
| 1996 | |
| 1997 | 16780 |
| 1998 | 17060 |
| 1999 | 17278 |
| 2000 | 17250 |
| 2001 | 17495 |
| 2002 | 17250 |
| 2003 | 17191 |
| 2004 | 15692 |
| 2005 | 15187 |
| 2006 | 14740 |
| 2007 | 14375 |
| 2008 | 14099 |
| 2009 | 13726 |
| 2010 | 13529 |
| 2011 | 12857 |
| 2012 | 12504 |
| 2013 | 12167 |
| 2014 | 11903 |
| 2015 | 11834 |
| 2016 | 11968 |