Year Percent 2000-01-01 0.0012420000000000000 2001-01-01 0.0014320000000000001 2002-01-01 0.0016560000000000000 2003-01-01 0.0028210000000000000 2004-01-01 0.0027600000000000003 2005-01-01 0.0025080000000000000 2006-01-01 0.0018800000000000002 2007-01-01 0.0069689999999999995 2008-01-01 0.0235030000000000000 2009-01-01 0.0364769999999999960 2010-01-01 0.0657560000000000000 2011-01-01 0.0568539999999999950 2012-01-01 0.0710799999999999900 2013-01-01 0.0730470000000000000 2014-01-01 0.0739820000000000000 2015-01-01 0.1060950000000000100