| 年度 | 实际值 |
|---|---|
| 1993 | 2400 |
| 1994 | 2467 |
| 1995 | 2506 |
| 1996 | 2217 |
| 1997 | |
| 1998 | |
| 1999 | 6389 |
| 2000 | 6551 |
| 2001 | 6343 |
| 2002 | 6443 |
| 2003 | 6215 |
| 2004 | 4881 |
| 2005 | 4898 |
| 2006 | 4649 |
| 2007 | 5143 |
| 2008 | 7008 |
| 2009 | |
| 2010 | 5799 |
| 2011 | 6134 |
| 2012 | 6156 |
| 2013 | 6624 |
| 2014 | 6558 |
| 2015 | 3466 |
| 2016 | 5967 |
| 2017 | 7114 |
| 2018 | 7533 |
| 2019 | 8268 |