年度 | 实际值 |
---|---|
1992 | 10.1 |
1993 | |
1994 | |
1995 | 11 |
1996 | |
1997 | |
1998 | |
1999 | 10.8 |
2000 | 11.1 |
2001 | 11 |
2002 | 11.1 |
2003 | 11 |
2004 | 11 |
2005 | 12 |
2006 | 12 |
2007 | 13 |
2008 | 13 |
2009 | 14 |
2010 | 14 |
2011 | 13 |
2012 | 15 |
2013 | 15.48 |
2014 | 15.75 |
2015 | 16 |
2016 | 16 |
2017 | 16 |