| 年度 | 实际值 |
|---|---|
| 1993 | 3608 |
| 1994 | 3953 |
| 1995 | 3967 |
| 1996 | 4092 |
| 1997 | 4118 |
| 1998 | 4232 |
| 1999 | 2829 |
| 2000 | 4171 |
| 2001 | 4040 |
| 2002 | 3485 |
| 2003 | 2659 |
| 2004 | 2796 |
| 2005 | 4098 |
| 2006 | 4446 |
| 2007 | 4247 |
| 2008 | 4345 |
| 2009 | |
| 2010 | 5466 |
| 2011 | 5783 |
| 2012 | 5983 |
| 2013 | 6600 |
| 2014 | 6825 |
| 2015 | 7253 |
| 2016 | 7393 |
| 2017 | 7939 |
| 2018 | 8669 |