Year	Percent
1996-01-01	48.598200000000000
1997-01-01	48.409500000000000
1998-01-01	33.420900000000000
1999-01-01	37.926900000000000
2000-01-01	36.929900000000000
2001-01-01	33.415500000000000
2002-01-01	34.206500000000000
2003-01-01	35.511800000000000
2004-01-01	51.490300000000000
2005-01-01	77.418400000000000
2006-01-01	91.185800000000000
2007-01-01	85.231700000000000
2008-01-01	84.746500000000000
2009-01-01	81.718100000000000
2010-01-01	66.465100000000000
2011-01-01	59.060400000000000
2012-01-01	55.523900000000000
2013-01-01	56.472200000000000
2014-01-01	56.832800000000000
2015-01-01	57.281000000000006
2016-01-01	62.728900000000000