年度 | 实际值 |
---|---|
1992 | 50.2 |
1993 | |
1994 | |
1995 | 52.7 |
1996 | |
1997 | |
1998 | |
1999 | 54.9 |
2000 | 56.2 |
2001 | 52 |
2002 | 52.5 |
2003 | 53 |
2004 | 56 |
2005 | 56 |
2006 | 56 |
2007 | 57 |
2008 | 57 |
2009 | 56 |
2010 | 57 |
2011 | 57 |
2012 | 57 |
2013 | 57 |
2014 | 57 |
2015 | 56.3 |
2016 | 56.4929 |
2017 | 55.9 |
2018 | 55.9819 |