Year	Percent
2001-01-01	5.4176150000000005
2002-01-01	21.1145800000000000
2003-01-01	35.2780500000000000
2004-01-01	51.6285700000000000
2005-01-01	59.9227400000000050
2006-01-01	69.2046300000000100
2007-01-01	78.8652000000000000
2008-01-01	86.6856300000000000
2009-01-01	90.4105100000000000
2010-01-01	87.8246500000000000
2011-01-01	86.5887500000000000
2012-01-01	87.5071000000000000
2013-01-01	84.3272700000000000
2014-01-01	82.9523200000000000