| 年度 | 实际值 |
|---|---|
| 1992 | 39060 |
| 1993 | |
| 1994 | |
| 1995 | 35850 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 38379 |
| 2000 | 38370 |
| 2001 | 35340 |
| 2002 | 33000 |
| 2003 | 31050 |
| 2004 | 28390 |
| 2005 | 27090 |
| 2006 | 26830 |
| 2007 | 25850 |
| 2008 | 26930 |
| 2009 | 26610 |
| 2010 | 26900 |
| 2011 | 28850 |
| 2012 | 28890 |
| 2013 | 29830 |
| 2014 | 26120 |
| 2015 | 26110 |
| 2016 | 25870 |