年度 | 实际值 |
---|---|
1995 | 6.21 |
1996 | 6.79 |
1997 | 5.63 |
1998 | 6.1 |
1999 | 5.36 |
2000 | 6.21 |
2001 | 5.17 |
2002 | 5.25 |
2003 | 5.58 |
2004 | 6.88 |
2005 | 5.67 |
2006 | 5.51 |
2007 | 5.29 |
2008 | 4.88 |
2009 | |
2010 | 4.43 |
2011 | 4.4 |
2012 | 5.1 |
2013 | 3.8 |
2014 | 4.3 |
2015 | 7.86 |
2016 | 3.41 |
2017 | 5.78 |
2018 | 4.16 |