| 年度 | 实际值 |
|---|---|
| 1992 | 17000 |
| 1993 | |
| 1994 | |
| 1995 | 21000 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 31000 |
| 2000 | 32400 |
| 2001 | 29600 |
| 2002 | 31600 |
| 2003 | 32800 |
| 2004 | 32800 |
| 2005 | 32700 |
| 2006 | 29700 |
| 2007 | 29400 |
| 2008 | 32076 |
| 2009 | 34126 |
| 2010 | 34585 |
| 2011 | 31000 |
| 2012 | 31000 |
| 2013 | 31400 |
| 2014 | 31400 |
| 2015 | 31569.72 |
| 2016 | 10000 |
| 2017 | 10000 |