| 年度 | 实际值 |
|---|---|
| 1993 | 58000 |
| 1994 | 58900 |
| 1995 | 59700 |
| 1996 | 60000 |
| 1997 | 59100 |
| 1998 | 54300 |
| 1999 | |
| 2000 | 50200 |
| 2001 | 47237 |
| 2002 | 42589 |
| 2003 | 37678 |
| 2004 | 33651 |
| 2005 | 31244 |
| 2006 | 33521 |
| 2007 | 41418 |
| 2008 | 42272 |
| 2009 | 43572 |
| 2010 | 44015 |
| 2011 | 44811 |
| 2012 | 43218 |
| 2013 | 39673 |
| 2014 | 39965 |
| 2015 | 41796 |
| 2016 | 43386 |
| 2017 | 44658 |