年度 | 实际值 |
---|---|
1992 | 12.6 |
1993 | |
1994 | |
1995 | 13.2 |
1996 | |
1997 | |
1998 | |
1999 | 13.7 |
2000 | 13.5 |
2001 | 14 |
2002 | 13.6 |
2003 | 14 |
2004 | 14 |
2005 | 14 |
2006 | 14 |
2007 | 14 |
2008 | 14 |
2009 | 15 |
2010 | 15 |
2011 | 15 |
2012 | 15 |
2013 | 15 |
2014 | 15 |
2015 | 15 |
2016 | 15 |
2017 | 15 |