Quarter	Percent
2006-01-01	13.5479035341721
2006-04-01	16.2355462010702
2006-07-01	16.2112370668956
2006-10-01	15.3277661068490
2007-01-01	14.5167309366837
2007-04-01	16.5182125509109
2007-07-01	16.1069810913797
2007-10-01	14.5782141085596
2008-01-01	14.2061599858207
2008-04-01	16.8684830137908
2008-07-01	16.9249702285368
2008-10-01	15.7171196191232
2009-01-01	14.6603634431876
2009-04-01	17.0306833519780
2009-07-01	17.4046569391878
2009-10-01	16.9419484627648
2010-01-01	16.5385636254418
2010-04-01	18.6173517864756
2010-07-01	18.4391133043251
2010-10-01	17.8981610017096
2011-01-01	17.7594361750860
2011-04-01	19.8493422119378
2011-07-01	19.8341000708810
2011-10-01	18.9945001935016
2012-01-01	18.2306765251946
2012-04-01	20.5357239498209
2012-07-01	20.1211666743093
2012-10-01	20.0792705389482
2013-01-01	19.5319713138514
2013-04-01	21.4057499438064
2013-07-01	20.6582513497941
2013-10-01	20.0641422831142
2014-01-01	19.2548817409009
2014-04-01	21.0374548534071
2014-07-01	20.5243818337834
2014-10-01	20.2346718769286