| 年度 | 实际值 |
|---|---|
| 1993 | 31232 |
| 1994 | 33569 |
| 1995 | 33569 |
| 1996 | 33569 |
| 1997 | 33569 |
| 1998 | 33569 |
| 1999 | 33569 |
| 2000 | 40583 |
| 2001 | 40583 |
| 2002 | 40583 |
| 2003 | 40583 |
| 2004 | 40583 |
| 2005 | 40583 |
| 2006 | 40583 |
| 2007 | 40583 |
| 2008 | 40583 |
| 2009 | |
| 2010 | 40583 |
| 2011 | 40876 |
| 2012 | 38405 |
| 2013 | 38405 |
| 2014 | 38827 |
| 2015 | 38827 |
| 2016 | 38827 |
| 2017 | 38827 |
| 2018 | 38827 |