| 年度 | 实际值 |
|---|---|
| 1993 | 2940 |
| 1994 | 3020 |
| 1995 | 3155 |
| 1996 | 3285 |
| 1997 | 3033 |
| 1998 | 3003 |
| 1999 | 3143 |
| 2000 | 3234 |
| 2001 | 3252 |
| 2002 | 2885 |
| 2003 | 2936 |
| 2004 | 2960 |
| 2005 | 3313 |
| 2006 | 3454 |
| 2007 | 3577 |
| 2008 | 3423 |
| 2009 | |
| 2010 | 3897 |
| 2011 | 3777 |
| 2012 | 3835 |
| 2013 | 3746 |
| 2014 | 3946 |
| 2015 | 2674 |
| 2016 | 3843 |
| 2017 | 3893 |
| 2018 | 4059 |