年度 | 实际值 |
---|---|
1992 | 39.2 |
1993 | |
1994 | |
1995 | 40.5 |
1996 | |
1997 | |
1998 | |
1999 | 42.6 |
2000 | 43.4 |
2001 | 44 |
2002 | 44.3 |
2003 | 45 |
2004 | 45 |
2005 | 46 |
2006 | 47 |
2007 | 48 |
2008 | 51 |
2009 | 52 |
2010 | 52 |
2011 | 53 |
2012 | 53 |
2013 | 53 |
2014 | 54 |
2015 | 55 |
2016 | 56 |
2017 | 56 |