Year Percent 1995-01-01 0.40164000000000000 1996-01-01 0.74261100000000000 1997-01-01 0.29878899999999997 1998-01-01 1.25248000000000000 1999-01-01 0.30997800000000003 2000-01-01 0.29369500000000000 2001-01-01 0.56469900000000000 2002-01-01 0.93769699999999990 2003-01-01 1.11828000000000000 2004-01-01 0.90427099999999990 2005-01-01 1.62115000000000000 2006-01-01 2.09342000000000000 2007-01-01 1.25240000000000000 2008-01-01 0.55790299999999990 2009-01-01 1.43467000000000010 2010-01-01 2.22599000000000040 2011-01-01 3.13695999999999970 2012-01-01 0.56515300000000000 2013-01-01 0.44248400000000000 2014-01-01 0.37516700000000003 2015-01-01 0.04157800000000000