Year Percent 2001-01-01 0.04675700000000000 2002-01-01 0.12868800000000002 2003-01-01 0.15285300000000000 2004-01-01 0.31325500000000000 2005-01-01 0.25667800000000000 2006-01-01 0.30738899999999997 2007-01-01 0.89144799999999990 2008-01-01 0.75515900000000000 2009-01-01 7.18997000000000000 2010-01-01 9.74223999999999900 2011-01-01 9.69030000000000000 2012-01-01 5.27912000000000000 2013-01-01 5.69527000000000000 2014-01-01 7.06452000000000000 2015-01-01 4.79700000000000000 2016-01-01 3.39360000000000000