Year Percent 2002-01-01 1.28520000000000000 2003-01-01 0.92171299999999990 2004-01-01 0.59492800000000000 2005-01-01 0.63270800000000000 2006-01-01 0.35410600000000000 2007-01-01 0.06147900000000000 2008-01-01 0.06615700000000001 2009-01-01 0.11427700000000000 2010-01-01 0.12646000000000000 2011-01-01 0.12362400000000000 2012-01-01 0.12587700000000000 2013-01-01 0.11869200000000000 2014-01-01 0.11599500000000000 2015-01-01 0.11072500000000000 2016-01-01 0.10016100000000000