| 年度 | 实际值 |
|---|---|
| 1993 | 1450 |
| 1994 | 1477 |
| 1995 | 1412 |
| 1996 | 1308 |
| 1997 | |
| 1998 | 5521 |
| 1999 | 5300 |
| 2000 | 5657 |
| 2001 | 5766 |
| 2002 | 5979 |
| 2003 | 6055 |
| 2004 | 5523 |
| 2005 | 5736 |
| 2006 | 5848 |
| 2007 | 5727 |
| 2008 | 6169 |
| 2009 | |
| 2010 | 6653 |
| 2011 | 6873 |
| 2012 | 7366 |
| 2013 | 8812 |
| 2014 | 8636 |
| 2015 | 8881 |
| 2016 | 9347 |
| 2017 | 9940 |
| 2018 | 12025 |