Year Percent 2008-01-01 1.4789299999999999 2009-01-01 1.3128600000000001 2010-01-01 10.0988000000000000 2011-01-01 10.3291000000000000 2012-01-01 10.3421000000000000 2013-01-01 10.3402000000000000