| 年度 | 实际值 |
|---|---|
| 1993 | 42000 |
| 1994 | 40000 |
| 1995 | 47000 |
| 1996 | 50000 |
| 1997 | 51400 |
| 1998 | 52600 |
| 1999 | |
| 2000 | 51824 |
| 2001 | 50611 |
| 2002 | 51633 |
| 2003 | 52160 |
| 2004 | 51335 |
| 2005 | 49449 |
| 2006 | 47337 |
| 2007 | 47744 |
| 2008 | 48936 |
| 2009 | 45957 |
| 2010 | 43969 |
| 2011 | 42866 |
| 2012 | 40482 |
| 2013 | 36327 |
| 2014 | 36599 |
| 2015 | 38671 |
| 2016 | 39593 |
| 2017 | 39914 |