| 年度 | 实际值 |
|---|---|
| 1992 | 15899 |
| 1993 | 18914 |
| 1994 | 23089 |
| 1995 | 17295 |
| 1996 | 19175 |
| 1997 | 18630 |
| 1998 | 18348 |
| 1999 | 19187 |
| 2000 | 19935 |
| 2001 | 19736 |
| 2002 | 20841 |
| 2003 | 21081 |
| 2004 | 22537 |
| 2005 | 24667 |
| 2006 | 27526 |
| 2007 | 30372.52 |
| 2008 | 33956.18 |
| 2009 | |
| 2010 | 31072.74 |
| 2011 | 34943 |
| 2012 | 38913 |
| 2013 | 40557 |
| 2014 | 43676 |