年度 | 实际值 |
---|---|
1995 | 1.8 |
1996 | 1.9 |
1997 | 16.9 |
1998 | 1.1 |
1999 | 1 |
2000 | .9 |
2001 | .81 |
2002 | .95 |
2003 | 3.56 |
2004 | 4.26 |
2005 | 3.6 |
2006 | 3.56 |
2007 | 3.58 |
2008 | 4.08 |
2009 | |
2010 | 3.74 |
2011 | 3.59 |
2012 | 3.53 |
2013 | 3.46 |
2014 | 3.33 |
2015 | 3.4 |
2016 | 3.24 |
2017 | 3.06 |
2018 | 2.58 |