年度 | 实际值 |
---|---|
1992 | 8 |
1993 | 9 |
1994 | |
1995 | 9.42 |
1996 | 8.89 |
1997 | |
1998 | 6.1 |
1999 | 8.15 |
2000 | 9.3 |
2001 | 8.43 |
2002 | 8.08 |
2003 | 7.1 |
2004 | 8.04 |
2005 | 6.15 |
2006 | 6.23 |
2007 | 5.29 |
2008 | 5.09 |
2009 | |
2010 | 5.61 |
2011 | 5.3 |
2012 | 6.1 |
2013 | 2.8 |
2014 | 3.3 |
2015 | 4.5 |
2016 | 6.53 |
2017 | 6.68 |
2018 | 5.93 |