年度 | 实际值 |
---|---|
1995 | 6 |
1996 | 6.5 |
1997 | 2.94 |
1998 | 4.5 |
1999 | 8.2 |
2000 | 2.2 |
2001 | 3.96 |
2002 | 2.22 |
2003 | 6.72 |
2004 | 7.05 |
2005 | 7.53 |
2006 | 4.1 |
2007 | 2.56 |
2008 | 2.33 |
2009 | |
2010 | 2.7 |
2011 | 2.23 |
2012 | 2.1 |
2013 | 2 |
2014 | 1.75 |
2015 | 2.01 |
2016 | 2.41 |
2017 | 1.54 |
2018 | 1.38 |