年度 | 实际值 |
---|---|
1995 | 3.9 |
1996 | 3.7 |
1997 | 3.51 |
1998 | 3.3 |
1999 | 3.2 |
2000 | 3.1 |
2001 | 2.87 |
2002 | 2.6 |
2003 | 2.31 |
2004 | 1.82 |
2005 | 1.62 |
2006 | 1.34 |
2007 | 1.21 |
2008 | 1.15 |
2009 | |
2010 | .95 |
2011 | .9 |
2012 | .86 |
2013 | .91 |
2014 | .79 |
2015 | .85 |
2016 | 0.85 |
2017 | |
2018 | 1.01 |