| 年度 | 实际值 |
|---|---|
| 1993 | 1748 |
| 1994 | 1805 |
| 1995 | 1895 |
| 1996 | 1518 |
| 1997 | 5638 |
| 1998 | 4697 |
| 1999 | 7182 |
| 2000 | 9681 |
| 2001 | 8938 |
| 2002 | 8930 |
| 2003 | 8655 |
| 2004 | 9094 |
| 2005 | 4032 |
| 2006 | 4602 |
| 2007 | 5047 |
| 2008 | 5293 |
| 2009 | |
| 2010 | 5668 |
| 2011 | 5790 |
| 2012 | 6198 |
| 2013 | 6474 |
| 2014 | 5273 |
| 2015 | 7525 |
| 2016 | 8574 |
| 2017 | 9345 |
| 2018 | 9835 |