| 年度 | 实际值 |
|---|---|
| 1993 | 3526 |
| 1994 | 3466 |
| 1995 | 3625 |
| 1996 | 3354 |
| 1997 | 3525 |
| 1998 | 3475 |
| 1999 | 2548 |
| 2000 | 2937 |
| 2001 | 3329 |
| 2002 | 2939 |
| 2003 | 2767 |
| 2004 | 2672 |
| 2005 | 2541 |
| 2006 | 2848 |
| 2007 | 3114 |
| 2008 | 3253 |
| 2009 | |
| 2010 | 2599 |
| 2011 | 2912 |
| 2012 | 3011 |
| 2013 | 8670 |
| 2014 | 7989 |
| 2015 | 3510 |
| 2016 | 5037 |
| 2017 | 5582 |
| 2018 | 6000 |