| 年度 | 实际值 |
|---|---|
| 1995 | 5900 |
| 1996 | 10000 |
| 1997 | 6100 |
| 1998 | 6000 |
| 1999 | |
| 2000 | 14509 |
| 2001 | 14769 |
| 2002 | 16037 |
| 2003 | 14826 |
| 2004 | 13899 |
| 2005 | 13318 |
| 2006 | 12650 |
| 2007 | 12120 |
| 2008 | 11684 |
| 2009 | 11228 |
| 2010 | 11317 |
| 2011 | 12101 |
| 2012 | 12754 |
| 2013 | 13436 |
| 2014 | 14004 |
| 2015 | 14831 |
| 2016 | 15509 |
| 2017 | 15728 |