年度 | 实际值 |
---|---|
1995 | 14.1 |
1996 | 14.1 |
1997 | 14.09 |
1998 | 13.1 |
1999 | 12.7 |
2000 | 12 |
2001 | 11.22 |
2002 | 10.62 |
2003 | 10.07 |
2004 | 9.19 |
2005 | 9 |
2006 | 8.14 |
2007 | 8.38 |
2008 | 8.07 |
2009 | |
2010 | 7.45 |
2011 | 7.56 |
2012 | 7.95 |
2013 | 7.94 |
2014 | 8.07 |
2015 | 7.79 |
2016 | 7.81 |
2017 | |
2018 | 6.95 |