年度 | 实际值 |
---|---|
2000 | 12.4 |
2001 | 10.9 |
2002 | 10 |
2003 | 10.3 |
2004 | 13 |
2005 | 13.1 |
2006 | 14.5 |
2007 | 15.0520742646727 |
2008 | 12.5192886637868 |
2009 | 13.1 |
2010 | 15.3 |
2011 | 19.300708214963 |
2012 | 14.1 |
2013 | 14.3 |
2014 | 14.2 |
2015 | 14.5436239318055 |
2016 | 17.5 |
2017 | 6.7 |