| 年度 | 实际值 |
|---|---|
| 1993 | 3404 |
| 1994 | 3563 |
| 1995 | 3895 |
| 1996 | 3580 |
| 1997 | 3490 |
| 1998 | 3481 |
| 1999 | 2978 |
| 2000 | 3557 |
| 2001 | 3582 |
| 2002 | 3556 |
| 2003 | 3469 |
| 2004 | 3691 |
| 2005 | 3850 |
| 2006 | 3888 |
| 2007 | 3991 |
| 2008 | 3978 |
| 2009 | |
| 2010 | 4600 |
| 2011 | 3326 |
| 2012 | 3369 |
| 2013 | 3325 |
| 2014 | 3364 |
| 2015 | 3482 |
| 2016 | 3566 |
| 2017 | 3568 |
| 2018 | 3715 |