年度 | 实际值 |
---|---|
2000 | 12 |
2001 | 11.3 |
2002 | 11.9 |
2003 | 14.4 |
2004 | 12.7 |
2005 | 13.2 |
2006 | 24.5 |
2007 | 19.4903663414363 |
2008 | 9.10010481308335 |
2009 | 2.72701917562668 |
2010 | 9.3 |
2011 | 15.5 |
2012 | 11.1 |
2013 | 12.5 |
2014 | 10.8 |
2015 | 9.76579738465659 |
2016 | 11.5 |
2017 | 8.7 |