Year Percent 2002-01-01 0.2210430000000000000 2003-01-01 0.1145640000000000100 2004-01-01 0.0194900000000000000 2005-01-01 0.0043270000000000000 2006-01-01 0.0029870000000000000 2007-01-01 0.0022940000000000000 2008-01-01 0.0016750000000000000 2009-01-01 0.0020280000000000003 2010-01-01 0.0033390000000000000 2011-01-01 0.0040479999999999995 2012-01-01 0.0040910000000000000 2013-01-01 0.0060770000000000000 2014-01-01 0.0091520000000000000 2015-01-01 0.0268779999999999960 2016-01-01 0.0489380000000000000