年度 | 实际值 |
---|---|
1995 | 3.8 |
1996 | 3 |
1997 | 2.43 |
1998 | 2.2 |
1999 | 1.8 |
2000 | 1.7 |
2001 | 1.66 |
2002 | 1.53 |
2003 | 1.42 |
2004 | 1.25 |
2005 | 1.27 |
2006 | 1.71 |
2007 | 1.77 |
2008 | 1.76 |
2009 | |
2010 | 1.39 |
2011 | 1.08 |
2012 | 1.06 |
2013 | .88 |
2014 | .92 |
2015 | 1.2 |
2016 | 1.34 |
2017 | 1.22 |
2018 | 1.42 |