年度 | 实际值 |
---|---|
1992 | 26.4 |
1993 | |
1994 | |
1995 | 26.5 |
1996 | |
1997 | |
1998 | |
1999 | 26.6 |
2000 | 26.9 |
2001 | 27 |
2002 | 26.8 |
2003 | 27 |
2004 | 27 |
2005 | 26.8 |
2006 | 27 |
2007 | 27.3512 |
2008 | 27.58 |
2009 | 27.8 |
2010 | 28.3902 |
2011 | 28.47 |
2012 | 28.471 |
2013 | 28.42 |
2014 | 28.46 |
2015 | 28.66 |
2016 | 28.834 |
2017 | 29 |