| 年度 | 实际值 |
|---|---|
| 1993 | 6512 |
| 1994 | 6679 |
| 1995 | 6576 |
| 1996 | 5822 |
| 1997 | 6019 |
| 1998 | 5985 |
| 1999 | 5967 |
| 2000 | 6140 |
| 2001 | 6185 |
| 2002 | 5220 |
| 2003 | 4557 |
| 2004 | 4856 |
| 2005 | 6037 |
| 2006 | 5406 |
| 2007 | 5427 |
| 2008 | 4504 |
| 2009 | |
| 2010 | 7346 |
| 2011 | 7699 |
| 2012 | 7479 |
| 2013 | 7772 |
| 2014 | 8355 |
| 2015 | 8994 |
| 2016 | 8792 |
| 2017 | 8994 |
| 2018 | 8918 |