| 年度 | 实际值 |
|---|---|
| 1993 | 6207 |
| 1994 | 6454 |
| 1995 | 6256 |
| 1996 | 6181 |
| 1997 | 6181 |
| 1998 | 6181 |
| 1999 | 6181 |
| 2000 | 6181 |
| 2001 | 6181 |
| 2002 | 6181 |
| 2003 | 6181 |
| 2004 | 6181 |
| 2005 | 6181 |
| 2006 | 6181 |
| 2007 | 6181 |
| 2008 | 6181 |
| 2009 | |
| 2010 | 6222 |
| 2011 | 6222 |
| 2012 | 6222 |
| 2013 | 6238 |
| 2014 | 6238 |
| 2015 | 6238 |
| 2016 | 6238 |
| 2017 | 6238 |
| 2018 | 6238 |