年度 | 实际值 |
---|---|
1995 | 3.7 |
1996 | 3.9 |
1997 | 2.79 |
1998 | 7.1 |
1999 | 6.9 |
2000 | 3.6 |
2001 | 3.32 |
2002 | 2.35 |
2003 | 3.02 |
2004 | 2.77 |
2005 | 2.87 |
2006 | 3.34 |
2007 | 3.79 |
2008 | 3.9 |
2009 | |
2010 | 4.85 |
2011 | 4.88 |
2012 | 4.7 |
2013 | 4.84 |
2014 | 5.05 |
2015 | 5.06 |
2016 | 4.91 |
2017 | 4.08 |
2018 | 4.2 |