Year	Percent
1994-01-01	17.092200000000000
1995-01-01	15.041800000000000
1996-01-01	12.719900000000000
1997-01-01	10.614100000000000
1998-01-01	8.986390000000000
1999-01-01	8.447500000000000
2000-01-01	8.835189999999999
2001-01-01	10.096300000000000
2002-01-01	12.136500000000000
2003-01-01	11.826400000000000
2004-01-01	13.742500000000000
2005-01-01	14.487100000000000
2006-01-01	16.953500000000000
2007-01-01	16.573600000000000
2008-01-01	14.398600000000000
2009-01-01	18.261300000000000
2010-01-01	21.244600000000000
2011-01-01	20.506000000000000
2012-01-01	24.681500000000000
2013-01-01	27.911100000000000
2014-01-01	27.295000000000000
2015-01-01	29.187900000000000
2016-01-01	29.034500000000000