Year	Percent
1999-01-01	8.876920000000000
2000-01-01	6.325880000000001
2001-01-01	5.411010000000000
2002-01-01	5.601820000000000
2003-01-01	6.589239999999999
2004-01-01	10.954300000000000
2005-01-01	11.685400000000000
2006-01-01	16.007000000000000
2007-01-01	10.968000000000000
2008-01-01	5.416010000000000
2009-01-01	11.991500000000000
2010-01-01	10.731400000000000
2011-01-01	6.678100000000000
2012-01-01	9.163290000000000
2013-01-01	8.418190000000000
2014-01-01	5.653760000000000
2015-01-01	8.912600000000000
2016-01-01	11.084300000000000