| 年度 | 实际值 |
|---|---|
| 1992 | 11616 |
| 1993 | 8967 |
| 1994 | 6295 |
| 1995 | 11245 |
| 1996 | 14513 |
| 1997 | 14568 |
| 1998 | 17848 |
| 1999 | 12042 |
| 2000 | 12655 |
| 2001 | 12084 |
| 2002 | 11108 |
| 2003 | 12338 |
| 2004 | 11646 |
| 2005 | 11225 |
| 2006 | 12146 |
| 2007 | 12853.7 |
| 2008 | 11059.5 |
| 2009 | |
| 2010 | 14905.56 |
| 2011 | 25338 |
| 2012 | 26193 |
| 2013 | 28173 |
| 2014 | 27703 |