| 年度 | 实际值 |
|---|---|
| 1993 | 178 |
| 1994 | 392 |
| 1995 | 392 |
| 1996 | 392 |
| 1997 | 392 |
| 1998 | 392 |
| 1999 | 392 |
| 2000 | 392 |
| 2001 | 1650 |
| 2002 | 1650 |
| 2003 | 1650 |
| 2004 | 1650 |
| 2005 | 1650 |
| 2006 | 1650 |
| 2007 | 1650 |
| 2008 | 1650 |
| 2009 | |
| 2010 | 1650 |
| 2011 | 3230 |
| 2012 | 4467 |
| 2013 | 4467 |
| 2014 | 4653 |
| 2015 | 4653 |
| 2016 | 4652 |
| 2017 | 4652 |
| 2018 | 4653 |