年度 | 实际值 |
---|---|
1992 | 17 |
1993 | |
1994 | |
1995 | 17.6 |
1996 | |
1997 | |
1998 | |
1999 | 18.1 |
2000 | 18.2 |
2001 | 18 |
2002 | 18.4 |
2003 | 19 |
2004 | 19 |
2005 | 19.4 |
2006 | 19.6 |
2007 | 20.328 |
2008 | 20.8 |
2009 | 21 |
2010 | 21.3615 |
2011 | 21.59 |
2012 | 21.9073 |
2013 | 22.05 |
2014 | 22.18 |
2015 | 22.12 |
2016 | 22.2177 |
2017 | 22 |