Year Percent 1993-01-01 0.012440999999999999 1994-01-01 0.012601000000000001 1995-01-01 1.566570000000000000 1996-01-01 6.091819999999999000 1997-01-01 19.743900000000000000 1998-01-01 20.018500000000000000 1999-01-01 19.422700000000000000 2000-01-01 20.306100000000000000 2001-01-01 18.509600000000000000 2002-01-01 28.215200000000000000 2003-01-01 41.617900000000000000 2004-01-01 43.774600000000000000 2005-01-01 53.971400000000000000 2006-01-01 82.662800000000000000 2007-01-01 100.831000000000000000 2008-01-01 61.901200000000000000 2009-01-01 61.155100000000000000 2010-01-01 57.454500000000000000 2011-01-01 43.871200000000000000 2012-01-01 35.626700000000000000 2013-01-01 34.393900000000000000 2014-01-01 25.094200000000000000 2015-01-01 23.550000000000000000 2016-01-01 38.111200000000000000 2017-01-01 42.635100000000000000