年度 | 实际值 |
---|---|
1995 | 2.5 |
1996 | 2.5 |
1997 | 5.83 |
1998 | 1.8 |
1999 | 1.7 |
2000 | 1.5 |
2001 | 2.29 |
2002 | 2.19 |
2003 | 1.71 |
2004 | 1.41 |
2005 | 1.21 |
2006 | 1.07 |
2007 | .9 |
2008 | .84 |
2009 | |
2010 | 3.61 |
2011 | 3.1 |
2012 | 3.08 |
2013 | 3.05 |
2014 | 2.7 |
2015 | 2.58 |
2016 | 2.42 |
2017 | 2.14 |
2018 | 2 |