| 年度 | 实际值 |
|---|---|
| 1993 | 36000 |
| 1994 | 37000 |
| 1995 | 38100 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 36939 |
| 2000 | 33791 |
| 2001 | 29939 |
| 2002 | 33791 |
| 2003 | 20527 |
| 2004 | 43444 |
| 2005 | 14671 |
| 2006 | 14540 |
| 2007 | 14014 |
| 2008 | 14740 |
| 2009 | 15296 |
| 2010 | 14723 |
| 2011 | 15238 |
| 2012 | 15484 |
| 2013 | 15062 |
| 2014 | 15805 |
| 2015 | 16466 |
| 2016 | 16986 |
| 2017 | 17856 |