| 年度 | 实际值 |
|---|---|
| 1993 | 2774 |
| 1994 | 2906 |
| 1995 | 3181 |
| 1996 | 3553 |
| 1997 | 3781 |
| 1998 | 3830 |
| 1999 | 3979 |
| 2000 | 4129 |
| 2001 | 3472 |
| 2002 | 2975 |
| 2003 | 3055 |
| 2004 | 3547 |
| 2005 | 3079 |
| 2006 | 3609 |
| 2007 | 3826 |
| 2008 | 4042 |
| 2009 | |
| 2010 | 4317 |
| 2011 | 4224 |
| 2012 | 3942 |
| 2013 | 3996 |
| 2014 | 4133 |
| 2015 | 4188 |
| 2016 | 4283 |
| 2017 | 4524 |
| 2018 | 4603 |