| 年度 | 实际值 |
|---|---|
| 1993 | 1370 |
| 1994 | 4568 |
| 1995 | 4568 |
| 1996 | 4568 |
| 1997 | 5475 |
| 1998 | 5475 |
| 1999 | 6496 |
| 2000 | 6496 |
| 2001 | 12574 |
| 2002 | 12484 |
| 2003 | 12484 |
| 2004 | 12484 |
| 2005 | 12188 |
| 2006 | 12187 |
| 2007 | 12187 |
| 2008 | 12187 |
| 2009 | |
| 2010 | 12187 |
| 2011 | 12187 |
| 2012 | 12187 |
| 2013 | 12187 |
| 2014 | 12187 |
| 2015 | 16411 |
| 2016 | 16411 |
| 2017 | 16406 |
| 2018 | 16406 |