| 年度 | 实际值 |
|---|---|
| 1993 | 5892 |
| 1994 | 5972 |
| 1995 | 5207 |
| 1996 | 4797 |
| 1997 | 4808 |
| 1998 | 4680 |
| 1999 | 4491 |
| 2000 | 4474 |
| 2001 | 4505 |
| 2002 | 4414 |
| 2003 | 4607 |
| 2004 | 4131 |
| 2005 | 4578 |
| 2006 | 4097 |
| 2007 | 4004 |
| 2008 | 4074 |
| 2009 | |
| 2010 | 4528 |
| 2011 | 4920 |
| 2012 | 5144 |
| 2013 | 5207 |
| 2014 | 5024 |
| 2015 | 5322 |
| 2016 | 5561 |
| 2017 | 5656 |
| 2018 | 5512 |