Year Percent 2007-01-01 3.0293799999999997 2008-01-01 2.6289999999999996 2009-01-01 0.7990020000000000 2010-01-01 0.9884959999999999 2011-01-01 1.1081500000000000 2012-01-01 1.0668799999999998 2013-01-01 1.5680600000000000 2014-01-01 2.5297600000000000 2015-01-01 1.1491700000000000