| 年度 | 实际值 |
|---|---|
| 1992 | 57440 |
| 1993 | |
| 1994 | |
| 1995 | 51680 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 46380 |
| 2000 | 42750 |
| 2001 | 39170 |
| 2002 | 34940 |
| 2003 | 31860 |
| 2004 | 31680 |
| 2005 | 32080 |
| 2006 | 32970 |
| 2007 | 32150 |
| 2008 | 33660 |
| 2009 | 30970 |
| 2010 | 30280 |
| 2011 | 29800 |
| 2012 | 29090 |
| 2013 | 29130 |
| 2014 | 27110 |
| 2015 | 29250 |
| 2016 | 27750 |