年度 | 实际值 |
---|---|
1992 | 6.5 |
1993 | |
1994 | |
1995 | 6.7 |
1996 | |
1997 | |
1998 | |
1999 | 7.6 |
2000 | 7.5 |
2001 | 8 |
2002 | 7.7 |
2003 | 8 |
2004 | 9 |
2005 | 9 |
2006 | 9 |
2007 | 9 |
2008 | 9 |
2009 | 10 |
2010 | 10 |
2011 | 10 |
2012 | 11 |
2013 | 10.76 |
2014 | 11.09 |
2015 | 11.2 |
2016 | 11.1 |
2017 | 11.3 |
2018 | 11.4 |