| 年度 | 实际值 |
|---|---|
| 1992 | 7446 |
| 1993 | 21061 |
| 1994 | 7710 |
| 1995 | 8970 |
| 1996 | 9466 |
| 1997 | 9028 |
| 1998 | 8591 |
| 1999 | 10433 |
| 2000 | 11386 |
| 2001 | 11589 |
| 2002 | 12545 |
| 2003 | 10709 |
| 2004 | 12195 |
| 2005 | 12543 |
| 2006 | 13667 |
| 2007 | 16018 |
| 2008 | 24375.1 |
| 2009 | |
| 2010 | 30120.5 |
| 2011 | 33759 |
| 2012 | 35660 |
| 2013 | 38643 |
| 2014 | 18413 |