| 年度 | 实际值 |
|---|---|
| 1992 | 73030 |
| 1993 | |
| 1994 | |
| 1995 | 65880 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 69271 |
| 2000 | 59730 |
| 2001 | 46850 |
| 2002 | 38820 |
| 2003 | 31010 |
| 2004 | 27650 |
| 2005 | 36150 |
| 2006 | 35350 |
| 2007 | 33820 |
| 2008 | 36810 |
| 2009 | 32940 |
| 2010 | 31360 |
| 2011 | 28270 |
| 2012 | 28030 |
| 2013 | 28390 |
| 2014 | 19080 |
| 2015 | 20620 |
| 2016 | 20640 |