年度 | 实际值 |
---|---|
1995 | 5.8 |
1996 | 5.2 |
1997 | 4.69 |
1998 | 4.3 |
1999 | 4 |
2000 | 3.6 |
2001 | 3.27 |
2002 | 3.05 |
2003 | 2.68 |
2004 | 2.4 |
2005 | 1.42 |
2006 | 1.25 |
2007 | 1.08 |
2008 | 1.08 |
2009 | |
2010 | .88 |
2011 | .84 |
2012 | .84 |
2013 | .83 |
2014 | .75 |
2015 | .61 |
2016 | 0.51 |
2017 | |
2018 | 0.39 |