| 年度 | 实际值 |
|---|---|
| 1993 | 936 |
| 1994 | 922 |
| 1995 | 1067 |
| 1996 | 2079 |
| 1997 | 2017 |
| 1998 | 3045 |
| 1999 | 2220 |
| 2000 | 2493 |
| 2001 | 2523 |
| 2002 | 2365 |
| 2003 | 2357 |
| 2004 | 2467 |
| 2005 | 2570 |
| 2006 | 2707 |
| 2007 | 2604 |
| 2008 | 3493 |
| 2009 | |
| 2010 | 4051 |
| 2011 | 4756 |
| 2012 | 5325 |
| 2013 | 5348 |
| 2014 | 5590 |
| 2015 | 5893 |
| 2016 | 6158 |
| 2017 | 6589 |
| 2018 | 6870 |