Year	Percent
1996-01-01	11.2903000000000000
1997-01-01	9.2982100000000010
1998-01-01	4.6896600000000000
1999-01-01	5.5312900000000000
2000-01-01	6.7760500000000000
2001-01-01	6.2517200000000000
2002-01-01	5.5188000000000000
2003-01-01	6.5320500000000000
2004-01-01	7.4295200000000000
2005-01-01	7.0007800000000010
2006-01-01	6.9146800000000010
2007-01-01	7.3788100000000005
2008-01-01	7.5423100000000005
2009-01-01	8.3158000000000000
2010-01-01	6.8174899999999990
2011-01-01	6.6562899999999990
2012-01-01	6.6898399999999990
2013-01-01	6.9751400000000000
2014-01-01	6.2211300000000005
2015-01-01	6.5804899999999990
2016-01-01	6.6945000000000000