年度 | 实际值 |
---|---|
1995 | 1.2 |
1996 | .9 |
1997 | .89 |
1998 | .8 |
1999 | .7 |
2000 | .6 |
2001 | .66 |
2002 | .77 |
2003 | .65 |
2004 | 3.98 |
2005 | 3.32 |
2006 | 2.97 |
2007 | 2.85 |
2008 | 2.54 |
2009 | |
2010 | 2 |
2011 | 2.22 |
2012 | 2.06 |
2013 | 2.1 |
2014 | 1.9 |
2015 | 2.00448948043439 |
2016 | 1.87 |
2017 | 1.88 |
2018 | 1.89 |