Year	Percent
1996-01-01	4.5950100000000000
1997-01-01	2.5521300000000000
1998-01-01	4.1891600000000000
1999-01-01	3.3553200000000000
2000-01-01	6.2796000000000000
2001-01-01	3.8431599999999997
2002-01-01	7.0795600000000010
2003-01-01	6.9756899999999990
2004-01-01	5.5612300000000000
2005-01-01	3.1263500000000000
2006-01-01	2.8625900000000000
2007-01-01	4.1910800000000000
2008-01-01	6.6902399999999990
2009-01-01	5.5099300000000010
2010-01-01	5.0271700000000000
2011-01-01	4.8541700000000000
2012-01-01	5.9951099999999995
2013-01-01	5.5708000000000000
2014-01-01	5.2400199999999995
2015-01-01	5.0534300000000005
2016-01-01	6.6821500000000000