Year	Percent
2000-01-01	51.063800000000000
2001-01-01	57.446800000000000
2002-01-01	61.363600000000000
2003-01-01	55.769200000000000
2004-01-01	61.403500000000000
2005-01-01	57.971000000000004
2006-01-01	55.056200000000000
2007-01-01	50.000000000000000
2008-01-01	53.623200000000000
2009-01-01	59.111100000000000
2010-01-01	68.476200000000000
2011-01-01	71.264300000000000
2012-01-01	70.155000000000000
2013-01-01	68.953100000000000
2014-01-01	71.764700000000000