Year	Percent
2000-01-01	3.9159699999999997
2001-01-01	7.6200000000000000
2002-01-01	7.0100000000000000
2003-01-01	7.0800000000000000
2004-01-01	6.9100000000000000
2005-01-01	8.5400000000000000
2006-01-01	51.8800000000000000
2007-01-01	53.4200000000000000
2008-01-01	54.6000000000000000
2009-01-01	52.4000000000000000
2010-01-01	53.3800000000000000
2011-01-01	60.6900000000000000
2012-01-01	66.6100000000000000
2013-01-01	68.0800000000000000
2014-01-01	75.4000000000000000
2015-01-01	75.2000000000000000
2016-01-01	80.0800000000000000