Year	Percent
1995-01-01	31.8349764475000
1996-01-01	31.4088695925000
1997-01-01	31.1912127775000
1998-01-01	32.5410117475000
1999-01-01	33.2663382750000
2000-01-01	35.8577323450000
2001-01-01	37.5693698275000
2002-01-01	38.5857643575000
2003-01-01	40.7944084875000
2004-01-01	41.0846010825000
2005-01-01	42.8132577425000
2006-01-01	45.3455865425000
2007-01-01	47.9804188725000
2008-01-01	49.2940287375000
2009-01-01	50.2683442850000
2010-01-01	51.6206115750000
2011-01-01	52.5714064950000
2012-01-01	55.0500000000000
2013-01-01	56.9833333333333
2014-01-01	57.9333333333333
2015-01-01	59.6916666666667
2016-01-01	59.9416666666667
2017-01-01	59.5000000000000