| 年度 | 实际值 |
|---|---|
| 1993 | 9135 |
| 1994 | 6657 |
| 1995 | 9639 |
| 1996 | 9162 |
| 1997 | 5247 |
| 1998 | 6408 |
| 1999 | 5099 |
| 2000 | 5503 |
| 2001 | 5469 |
| 2002 | 4106 |
| 2003 | 5224 |
| 2004 | 5391 |
| 2005 | 5907 |
| 2006 | 6279 |
| 2007 | 5195 |
| 2008 | 5230 |
| 2009 | |
| 2010 | 4005 |
| 2011 | 6698 |
| 2012 | 7148 |
| 2013 | 7209 |
| 2014 | 7208 |
| 2015 | 7162 |
| 2016 | 7220 |
| 2017 | 7537 |
| 2018 | 7807 |