Year Percent 2005-01-01 0.094542999999999990 2006-01-01 0.102137000000000000 2007-01-01 0.017792000000000000 2008-01-01 0.018022000000000000 2009-01-01 0.019497000000000000 2010-01-01 0.021735000000000000 2011-01-01 0.029799000000000003 2012-01-01 0.018016000000000000 2013-01-01 0.035748000000000000 2014-01-01 0.076769000000000000 2015-01-01 0.063854000000000000 2016-01-01 0.113676000000000000