年度 | 实际值 |
---|---|
1995 | 9 |
1996 | 9.6 |
1997 | 9.7 |
1998 | 8.4 |
1999 | 8.9 |
2000 | 7.5 |
2001 | 7.97 |
2002 | 7.66 |
2003 | 7.83 |
2004 | 9.01 |
2005 | 11.78 |
2006 | 10.3 |
2007 | 10.52 |
2008 | 9.67 |
2009 | |
2010 | 8.72 |
2011 | 7.34 |
2012 | 7.15 |
2013 | 6.94 |
2014 | 6.63 |
2015 | 6.53 |
2016 | 6.45 |
2017 | 6.37 |
2018 | 5.97 |