年度 | 实际值 |
---|---|
1995 | 2.7 |
1996 | 2 |
1997 | 1.3 |
1998 | 1 |
1999 | .7 |
2000 | .9 |
2001 | .48 |
2002 | 1.07 |
2003 | .74 |
2004 | .58 |
2005 | .63 |
2006 | .62 |
2007 | .59 |
2008 | .64 |
2009 | |
2010 | .62 |
2011 | .69 |
2012 | .6 |
2013 | .64 |
2014 | .68 |
2015 | .57 |
2016 | 0.55 |
2017 | 0.45 |
2018 | 0.36 |