| 年度 | 实际值 |
|---|---|
| 1993 | 2344 |
| 1994 | 2360 |
| 1995 | 2250 |
| 1996 | 2270 |
| 1997 | 4979 |
| 1998 | 2073 |
| 1999 | 2095 |
| 2000 | 2492 |
| 2001 | 2900 |
| 2002 | 2441 |
| 2003 | 2815 |
| 2004 | 2683 |
| 2005 | 2684 |
| 2006 | 2631 |
| 2007 | 3104 |
| 2008 | 3124 |
| 2009 | |
| 2010 | 2478 |
| 2011 | 2901 |
| 2012 | 2887 |
| 2013 | 2846 |
| 2014 | 2756 |
| 2015 | 2951 |
| 2016 | 3130 |
| 2017 | 3479 |
| 2018 | 3563 |