| 年度 | 实际值 |
|---|---|
| 1982 | 6162 |
| 1983 | 6240 |
| 1984 | 6985 |
| 1985 | 8028 |
| 1986 | 8456 |
| 1987 | 7654 |
| 1988 | 9155 |
| 1989 | 9711 |
| 1990 | 9095 |
| 1991 | 8532 |
| 1992 | 7529 |
| 1993 | 6409 |
| 1994 | 7206 |
| 1995 | 8747 |
| 1996 | 7605 |
| 1997 | 9154 |
| 1998 | 9339 |
| 1999 | 10774 |
| 2000 | 14261 |
| 2001 | 10595 |
| 2002 | 8265 |
| 2003 | 8041 |
| 2004 | 8197 |
| 2005 | 8154 |
| 2006 | 7929 |
| 2007 | 9241 |
| 2008 | 12751 |
| 2009 | 9176 |
| 2010 | 6725 |
| 2011 | 6733 |
| 2012 | 4614 |
| 2013 | 3650 |
| 2014 | 3889 |
| 2015 | 3502 |