| 年度 | 实际值 |
|---|---|
| 1993 | 4809 |
| 1994 | 4897 |
| 1995 | 4961 |
| 1996 | 4862 |
| 1997 | 4707 |
| 1998 | 4759 |
| 1999 | 4922 |
| 2000 | 4717 |
| 2001 | 4235 |
| 2002 | 4166 |
| 2003 | 4093 |
| 2004 | 3951 |
| 2005 | 3932 |
| 2006 | 3962 |
| 2007 | 4251 |
| 2008 | 4471 |
| 2009 | |
| 2010 | 4560 |
| 2011 | 3434 |
| 2012 | 3725 |
| 2013 | 5543 |
| 2014 | 5016 |
| 2015 | 5062 |
| 2016 | 5413 |
| 2017 | 5659 |
| 2018 | 5908 |