年度 | 实际值 |
---|---|
1995 | 2.9 |
1996 | 3.1 |
1997 | 3.09 |
1998 | 3.2 |
1999 | 2.9 |
2000 | 3.3 |
2001 | 2.29 |
2002 | 2.04 |
2003 | 1.46 |
2004 | 1.3 |
2005 | 1.72 |
2006 | 1.63 |
2007 | 1.39 |
2008 | 1.23 |
2009 | |
2010 | 1.4 |
2011 | 1.5 |
2012 | 1.45 |
2013 | 1.41 |
2014 | 1.83 |
2015 | 7.29 |
2016 | 7.43 |
2017 | 6.29 |
2018 | 6.2 |