Year	Percent
1997-01-01	0.214140000000000
1998-01-01	0.191378000000000
1999-01-01	41.731800000000000
2000-01-01	51.380200000000000
2001-01-01	84.280600000000000
2002-01-01	82.799600000000000
2003-01-01	78.418900000000000
2004-01-01	79.552800000000000
2005-01-01	76.953100000000000
2006-01-01	86.527700000000000
2007-01-01	96.613700000000000
2008-01-01	82.844200000000000
2009-01-01	79.944900000000000
2010-01-01	73.018700000000000
2011-01-01	62.496200000000000
2012-01-01	66.066300000000000
2013-01-01	65.544200000000000
2014-01-01	58.431200000000000
2015-01-01	59.446000000000005
2016-01-01	55.329900000000000