年度 | 实际值 |
---|---|
1992 | .4 |
1993 | 1.8 |
1994 | |
1995 | 2.99 |
1996 | 2.42 |
1997 | 1.83 |
1998 | 7.02 |
1999 | 2.2 |
2000 | 1.33 |
2001 | 2.47 |
2002 | 2.53 |
2003 | 2.69 |
2004 | .49 |
2005 | 3.32 |
2006 | 3.47 |
2007 | 5.94 |
2008 | 3.04 |
2009 | |
2010 | 2.83 |
2011 | 6.1 |
2012 | 3 |
2013 | 3.7 |
2014 | 3.6 |
2015 | 4.45 |
2016 | 5.74 |
2017 | 3.91 |
2018 | 3.2 |