| 年度 | 实际值 |
|---|---|
| 1985 | 4636 |
| 1986 | |
| 1987 | |
| 1988 | |
| 1989 | |
| 1990 | 5252 |
| 1991 | |
| 1992 | 4283 |
| 1993 | |
| 1994 | |
| 1995 | 1813 |
| 1996 | |
| 1997 | |
| 1998 | |
| 1999 | 4269 |
| 2000 | 3983 |
| 2001 | 3531 |
| 2002 | 4579 |
| 2003 | 5310 |
| 2004 | 5916 |
| 2005 | 7564 |
| 2006 | 9519 |
| 2007 | 10233 |
| 2008 | 12106 |
| 2009 | 12776 |
| 2010 | 15935 |
| 2011 | 17800 |
| 2012 | 21600 |
| 2013 | 22800 |
| 2014 | 20600 |