年度 | 实际值 |
---|---|
1995 | 27.1 |
1996 | 21 |
1997 | 20.68 |
1998 | 20.1 |
1999 | |
2000 | 20.5 |
2001 | 16.53 |
2002 | 18.93 |
2003 | 17.71 |
2004 | 16.38 |
2005 | 13.64 |
2006 | 11.39 |
2007 | 9.82 |
2008 | 9.49 |
2009 | |
2010 | 11.25 |
2011 | 9.9 |
2012 | 9.22 |
2013 | 9.68 |
2014 | 9.55 |
2015 | 9.35 |
2016 | 8.84 |
2017 | |
2018 | 7.04 |