Year Percent 1993-01-01 0.00640200000000000 1994-01-01 0.06564199999999999 1995-01-01 0.06639300000000000 1996-01-01 0.16057100000000000 1997-01-01 0.20700200000000000 1998-01-01 0.25890700000000000 1999-01-01 0.30955300000000000 2000-01-01 0.36525100000000005 2001-01-01 0.38203800000000000 2002-01-01 0.39293700000000000 2003-01-01 0.58022800000000000 2004-01-01 0.57268100000000000 2005-01-01 0.56436500000000000 2006-01-01 0.52080600000000000 2007-01-01 0.46399200000000000 2008-01-01 0.46765600000000000 2009-01-01 0.51587100000000000 2010-01-01 0.70905200000000000 2011-01-01 0.67866200000000000 2012-01-01 0.67030700000000000 2013-01-01 0.70529000000000000 2014-01-01 0.79287600000000000 2015-01-01 0.85394799999999990 2016-01-01 0.71949500000000000