| 年度 | 实际值 |
|---|---|
| 1993 | 8870 |
| 1994 | 9604 |
| 1995 | 9632 |
| 1996 | 9039 |
| 1997 | 7619 |
| 1998 | 9244 |
| 1999 | 8715 |
| 2000 | 7418 |
| 2001 | 6735 |
| 2002 | 8410 |
| 2003 | 8685 |
| 2004 | 8825 |
| 2005 | 9323 |
| 2006 | 10129 |
| 2007 | 10548 |
| 2008 | 11192 |
| 2009 | |
| 2010 | 11912 |
| 2011 | 13849 |
| 2012 | 14640 |
| 2013 | 16484 |
| 2014 | 17545 |
| 2015 | 18552 |
| 2016 | 19647 |
| 2017 | 20540 |
| 2018 | 22076 |