年度 | 实际值 |
---|---|
1995 | 2.9 |
1996 | 3.5 |
1997 | 2.43 |
1998 | 2.3 |
1999 | 2 |
2000 | 1.8 |
2001 | 1.63 |
2002 | 1.57 |
2003 | 1.75 |
2004 | 1.51 |
2005 | 1.3 |
2006 | 1.11 |
2007 | 1.12 |
2008 | .75 |
2009 | |
2010 | .85 |
2011 | 1.55 |
2012 | 1.53 |
2013 | 1.95 |
2014 | 1.96 |
2015 | 2.1 |
2016 | 1.69 |
2017 | 1.05 |
2018 | 0.96 |