| 年度 | 实际值 |
|---|---|
| 1993 | 2499 |
| 1994 | 2772 |
| 1995 | 2979 |
| 1996 | 2318 |
| 1997 | 1228 |
| 1998 | 2109 |
| 1999 | 1560 |
| 2000 | 1772 |
| 2001 | 1851 |
| 2002 | 2127 |
| 2003 | 2620 |
| 2004 | 2867 |
| 2005 | 2950 |
| 2006 | 3271 |
| 2007 | 3455 |
| 2008 | 3117 |
| 2009 | |
| 2010 | 2603 |
| 2011 | 2609 |
| 2012 | 2777 |
| 2013 | 2727 |
| 2014 | 2815 |
| 2015 | 2966 |
| 2016 | 3610 |
| 2017 | 4788 |
| 2018 | 5578 |