年度 | 实际值 |
---|---|
1992 | 6 |
1993 | 6 |
1994 | |
1995 | 1.82 |
1996 | .77 |
1997 | .76 |
1998 | 7.05 |
1999 | 1.17 |
2000 | .94 |
2001 | 1.54 |
2002 | 1.25 |
2003 | 2.67 |
2004 | 1.86 |
2005 | 3.96 |
2006 | 6.06 |
2007 | 6.58 |
2008 | 7.16 |
2009 | |
2010 | 8.11 |
2011 | 6.1 |
2012 | .3 |
2013 | 7.5 |
2014 | 6.6 |
2015 | 13.86 |
2016 | 6.48 |
2017 | 0.11 |
2018 | 6.98 |