| 年度 | 实际值 |
|---|---|
| 1992 | 8414 |
| 1993 | 8878 |
| 1994 | 9894 |
| 1995 | 13420 |
| 1996 | 10924 |
| 1997 | 12598 |
| 1998 | 12859 |
| 1999 | 11741 |
| 2000 | 12301 |
| 2001 | 14796 |
| 2002 | 15321 |
| 2003 | 15607 |
| 2004 | 15871 |
| 2005 | 14961 |
| 2006 | 18325.2 |
| 2007 | 20846.2 |
| 2008 | 21341.8 |
| 2009 | |
| 2010 | 29881.63 |
| 2011 | 30695 |
| 2012 | 31250 |
| 2013 | 30534 |
| 2014 | 13560 |