| 年度 | 实际值 |
|---|---|
| 1992 | 29807 |
| 1993 | 3064 |
| 1994 | 5264 |
| 1995 | 32078 |
| 1996 | 12896 |
| 1997 | 34128 |
| 1998 | 30075 |
| 1999 | 45562 |
| 2000 | 30657 |
| 2001 | 30550 |
| 2002 | 30767 |
| 2003 | 30671 |
| 2004 | 29989 |
| 2005 | 32103 |
| 2006 | 32998 |
| 2007 | 19894.75 |
| 2008 | 20515.43 |
| 2009 | |
| 2010 | 21885.8 |
| 2011 | 24788 |
| 2012 | 26291 |
| 2013 | 25865 |
| 2014 | 26697 |