Year Percent 2001-01-01 0.3370200000000000 2002-01-01 0.5604899999999999 2003-01-01 14.1529999999999990 2004-01-01 3.5581500000000000 2005-01-01 0.7500000000000000 2006-01-01 1.1378600000000000 2007-01-01 3.4319800000000003 2008-01-01 4.3175800000000000 2009-01-01 2.3603400000000003 2010-01-01 4.2541400000000005 2011-01-01 2.2890599999999997 2012-01-01 6.6088500000000000 2013-01-01 6.6088500000000000 2014-01-01 11.3999000000000000 2015-01-01 10.1760000000000000 2016-01-01 13.1672000000000000