Year	Percent
1995-01-01	52.8187502250000
1996-01-01	52.5553557100000
1997-01-01	51.9343260700000
1998-01-01	51.5080271275000
1999-01-01	51.7810022050000
2000-01-01	52.4502111625000
2001-01-01	52.1055460325000
2002-01-01	51.4511916250000
2003-01-01	51.5661076625000
2004-01-01	52.2159656100000
2005-01-01	53.3131219400000
2006-01-01	54.1625699825000
2007-01-01	55.4828554850000
2008-01-01	56.5027051225000
2009-01-01	56.0416335625000
2010-01-01	57.0378457000000
2011-01-01	57.7289360350000
2012-01-01	63.0666666666667
2013-01-01	63.6666666666667
2014-01-01	64.4416666666667
2015-01-01	64.7833333333333
2016-01-01	65.1416666666667
2017-01-01	65.3750000000000