| 年度 | 实际值 |
|---|---|
| 1993 | 2450 |
| 1994 | 2691 |
| 1995 | 2659 |
| 1996 | 2600 |
| 1997 | 1942 |
| 1998 | 2372 |
| 1999 | 2508 |
| 2000 | 1889 |
| 2001 | 1903 |
| 2002 | 1648 |
| 2003 | 1939 |
| 2004 | 1920 |
| 2005 | 1865 |
| 2006 | 2663 |
| 2007 | 2665 |
| 2008 | 3078 |
| 2009 | |
| 2010 | 2907 |
| 2011 | 2896 |
| 2012 | 3087 |
| 2013 | 3254 |
| 2014 | 3400 |
| 2015 | 3238 |
| 2016 | 3539 |
| 2017 | 3819 |
| 2018 | 3884 |