年度 | 实际值 |
---|---|
1992 | 19.5 |
1993 | |
1994 | |
1995 | 19.9 |
1996 | |
1997 | |
1998 | |
1999 | 20.3 |
2000 | 21 |
2001 | 21 |
2002 | 20.6 |
2003 | 21 |
2004 | 21 |
2005 | 20.2 |
2006 | 21.5 |
2007 | 21.8231 |
2008 | 22.04 |
2009 | 22.6 |
2010 | 24.4312 |
2011 | 23.96 |
2012 | 23.5839 |
2013 | 23.92 |
2014 | 24.17 |
2015 | 24.79 |
2016 | 24.8068 |
2017 | 25 |