年度 | 实际值 |
---|---|
1995 | 3 |
1996 | 2 |
1997 | 3.68 |
1998 | 2 |
1999 | 2 |
2000 | 2 |
2001 | 2.03 |
2002 | 1.6 |
2003 | 1.56 |
2004 | 1.57 |
2005 | 1.39 |
2006 | 1.39 |
2007 | 1.52 |
2008 | .95 |
2009 | |
2010 | 1.41 |
2011 | 1.25 |
2012 | 1.27 |
2013 | 1.26 |
2014 | 1.17 |
2015 | .91 |
2016 | 0.79 |
2017 | 2.3 |
2018 | 2.08 |