| 年度 | 实际值 |
|---|---|
| 1993 | 4388 |
| 1994 | 4516 |
| 1995 | 4722 |
| 1996 | 4285 |
| 1997 | 4483 |
| 1998 | 4654 |
| 1999 | 5001 |
| 2000 | 5171 |
| 2001 | 4115 |
| 2002 | 4302 |
| 2003 | 4508 |
| 2004 | 4594 |
| 2005 | 4569 |
| 2006 | 4442 |
| 2007 | 3604 |
| 2008 | 3600 |
| 2009 | |
| 2010 | 5199 |
| 2011 | 5257 |
| 2012 | 5433 |
| 2013 | 5409 |
| 2014 | 5374 |
| 2015 | 5728 |
| 2016 | 5935 |
| 2017 | 6007 |
| 2018 | 6035 |