年度 | 实际值 |
---|---|
1992 | 16 |
1993 | |
1994 | |
1995 | 16.9 |
1996 | |
1997 | |
1998 | |
1999 | 17.6 |
2000 | 17.8 |
2001 | 16 |
2002 | 19.2974 |
2003 | 19.5819 |
2004 | 20.4775 |
2005 | 20.5896 |
2006 | 20.603 |
2007 | 20.5646 |
2008 | 20.5698 |
2009 | 20.3369 |
2010 | 20.787 |
2011 | 21 |
2012 | 21 |
2013 | |
2014 | 19.69 |
2015 | 25.3997 |