| 年度 | 实际值 |
|---|---|
| 1992 | 13098 |
| 1993 | |
| 1994 | |
| 1995 | 14562 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 16530 |
| 2000 | 16400 |
| 2001 | 16261 |
| 2002 | 15903 |
| 2003 | 15728 |
| 2004 | 15745 |
| 2005 | 15804 |
| 2006 | 15844 |
| 2007 | 15664 |
| 2008 | 13934 |
| 2009 | 14094 |
| 2010 | 13942 |
| 2011 | 14012 |
| 2012 | 14456 |
| 2013 | 14855 |
| 2014 | 14668 |
| 2015 | 14755 |
| 2016 | 14467 |