Year	Percent
1990-01-01	0.28998300000000000
1991-01-01	0.23967199999999997
1992-01-01	0.31596100000000000
1993-01-01	0.37993800000000000
1994-01-01	0.39973200000000003
1995-01-01	0.50573700000000000
1996-01-01	0.46907600000000005
1997-01-01	0.51521200000000000
1998-01-01	0.65215800000000000
1999-01-01	0.75441800000000000
2000-01-01	0.96389300000000000
2001-01-01	1.13765000000000000
2002-01-01	1.16851000000000000
2003-01-01	0.70152000000000000
2004-01-01	0.71198600000000000
2005-01-01	0.81610400000000000
2006-01-01	0.69305600000000000
2007-01-01	0.68875700000000000
2008-01-01	0.60851600000000000
2009-01-01	0.48040100000000000
2010-01-01	0.39478600000000000
2011-01-01	0.41461300000000000
2012-01-01	0.48746000000000006
2013-01-01	0.41276499999999994
2014-01-01	0.40624299999999997
2015-01-01	0.42312100000000000
2016-01-01	0.44248300000000000