年度 | 实际值 |
---|---|
1992 | 16 |
1993 | |
1994 | |
1995 | 16.4 |
1996 | |
1997 | |
1998 | |
1999 | 16.8 |
2000 | 16.98 |
2001 | 16.99 |
2002 | 17.09 |
2003 | 17.1 |
2004 | 16.94 |
2005 | 17 |
2006 | 17.07 |
2007 | 17.15 |
2008 | 17.24 |
2009 | 17.34 |
2010 | 18 |
2011 | 18 |
2012 | 19 |
2013 | 18 |
2014 | 21 |
2015 | 21 |
2016 | 21 |
2017 | 18 |