| 年度 | 实际值 |
|---|---|
| 1993 | 1579 |
| 1994 | 1786 |
| 1995 | 1766 |
| 1996 | 1603 |
| 1997 | |
| 1998 | |
| 1999 | 7140 |
| 2000 | 7296 |
| 2001 | 7338 |
| 2002 | 6824 |
| 2003 | 6634 |
| 2004 | 6003 |
| 2005 | 6715 |
| 2006 | 6822 |
| 2007 | 7385 |
| 2008 | 7693 |
| 2009 | |
| 2010 | 7102 |
| 2011 | 8866 |
| 2012 | 9414 |
| 2013 | 10140 |
| 2014 | 10852 |
| 2015 | 11685 |
| 2016 | 12495 |
| 2017 | 14048 |
| 2018 | 15049 |