| 年度 | 实际值 |
|---|---|
| 1992 | 42820 |
| 1993 | |
| 1994 | |
| 1995 | 42380 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 43417 |
| 2000 | 44510 |
| 2001 | 43440 |
| 2002 | 40370 |
| 2003 | 37220 |
| 2004 | 38780 |
| 2005 | 38480 |
| 2006 | 38220 |
| 2007 | 38720 |
| 2008 | 38990 |
| 2009 | 37840 |
| 2010 | 37900 |
| 2011 | 34950 |
| 2012 | 35310 |
| 2013 | 35470 |
| 2014 | 22980 |
| 2015 | 25490 |
| 2016 | 25930 |