| 年度 | 实际值 |
|---|---|
| 1993 | 15000 |
| 1994 | 36300 |
| 1995 | 38500 |
| 1996 | 40000 |
| 1997 | |
| 1998 | |
| 1999 | |
| 2000 | 7223 |
| 2001 | 24320 |
| 2002 | 26600 |
| 2003 | 24385 |
| 2004 | 26700 |
| 2005 | 55207 |
| 2006 | 53400 |
| 2007 | 50600 |
| 2008 | 47017 |
| 2009 | 45598 |
| 2010 | 42116 |
| 2011 | 39907 |
| 2012 | 36973 |
| 2013 | 22159 |
| 2014 | 21782 |
| 2015 | 22000 |
| 2016 | 21806 |
| 2017 | 21949 |