| 年度 | 实际值 |
|---|---|
| 1992 | 9495 |
| 1993 | 11014 |
| 1994 | 11559 |
| 1995 | 11297 |
| 1996 | 9726 |
| 1997 | 8342 |
| 1998 | 7673 |
| 1999 | 7782 |
| 2000 | 6865 |
| 2001 | 6742 |
| 2002 | 6965 |
| 2003 | 6612 |
| 2004 | 8014 |
| 2005 | 8629 |
| 2006 | 9598.11 |
| 2007 | 10060.2 |
| 2008 | 11040.1 |
| 2009 | |
| 2010 | 30657.74 |
| 2011 | 31625 |
| 2012 | 32869 |
| 2013 | 24484 |
| 2014 | 25397 |