Year	Percent
1996-01-01	18.033800000000000
1997-01-01	28.744400000000000
1998-01-01	35.152300000000000
1999-01-01	12.469900000000000
2000-01-01	16.115600000000000
2001-01-01	16.031500000000000
2002-01-01	20.828100000000000
2003-01-01	17.889200000000000
2004-01-01	27.346999999999998
2005-01-01	27.507400000000000
2006-01-01	40.977800000000000
2007-01-01	32.560500000000000
2008-01-01	21.752100000000000
2009-01-01	42.430700000000000
2010-01-01	39.407500000000000
2011-01-01	38.589000000000000
2012-01-01	31.838700000000000
2013-01-01	27.633800000000000
2014-01-01	24.337200000000000