| 年度 | 实际值 |
|---|---|
| 1992 | 32480 |
| 1993 | |
| 1994 | |
| 1995 | 32190 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 24282 |
| 2000 | 22602 |
| 2001 | 23715 |
| 2002 | 18081 |
| 2003 | 16263 |
| 2004 | 17712 |
| 2005 | 21999 |
| 2006 | 33519 |
| 2007 | 43027 |
| 2008 | 47446 |
| 2009 | 48856 |
| 2010 | 50756 |
| 2011 | 47146 |
| 2012 | 47260 |
| 2013 | 48020 |
| 2014 | 40052 |
| 2015 | 41042 |
| 2016 | 40829 |