Year	Percent
1996-01-01	25.566300000000000
1997-01-01	19.240000000000000
1998-01-01	10.222999999999999
1999-01-01	21.727100000000000
2000-01-01	24.439300000000000
2001-01-01	21.986600000000000
2002-01-01	16.882700000000000
2003-01-01	32.388700000000000
2004-01-01	40.972300000000000
2005-01-01	45.051800000000000
2006-01-01	52.931900000000000
2007-01-01	47.160600000000000
2008-01-01	42.112600000000000
2009-01-01	47.703400000000000
2010-01-01	39.922300000000000
2011-01-01	41.301900000000000
2012-01-01	38.874400000000000
2013-01-01	47.475200000000000
2014-01-01	48.494400000000000
2015-01-01	30.724200000000000
2016-01-01	24.092700000000000