| 年度 | 实际值 |
|---|---|
| 1993 | 8162 |
| 1994 | 8304 |
| 1995 | 8149 |
| 1996 | 7554 |
| 1997 | 5559 |
| 1998 | 5360 |
| 1999 | 5385 |
| 2000 | 5486 |
| 2001 | 5571 |
| 2002 | 5563 |
| 2003 | 6375 |
| 2004 | 6289 |
| 2005 | 10703 |
| 2006 | 9726 |
| 2007 | 10035 |
| 2008 | 9240 |
| 2009 | |
| 2010 | 10910 |
| 2011 | 11338 |
| 2012 | 11820 |
| 2013 | 12719 |
| 2014 | 12935 |
| 2015 | 14478 |
| 2016 | 15834 |
| 2017 | 16858 |
| 2018 | 17794 |