Year	Percent
1996-01-01	100.00000000000000
1997-01-01	100.00000000000000
1998-01-01	100.00000000000000
1999-01-01	91.24700000000001
2000-01-01	91.44880000000000
2001-01-01	82.14100000000000
2002-01-01	82.83990000000000
2003-01-01	80.76010000000000
2004-01-01	58.65460000000000
2005-01-01	52.29960000000000
2006-01-01	49.46390000000000
2007-01-01	46.03190000000000
2008-01-01	45.83100000000000
2009-01-01	47.41890000000000
2010-01-01	49.36860000000000
2011-01-01	48.18280000000000
2012-01-01	51.87750000000000
2013-01-01	49.74400000000000
2014-01-01	48.76360000000000
2015-01-01	69.08350000000000
2016-01-01	64.16120000000000