Quarter	Percent
2005-01-01	14.1892638737953
2005-04-01	13.6473789925911
2005-07-01	13.3321928004222
2005-10-01	12.8356413384116
2006-01-01	13.3253708215410
2006-04-01	12.5257262456941
2006-07-01	12.6382846495932
2006-10-01	12.0815693963855
2007-01-01	12.4137483493906
2007-04-01	11.8038664958087
2007-07-01	12.1285753936105
2007-10-01	11.6756933543658
2008-01-01	12.3353658099592
2008-04-01	12.4574985560362
2008-07-01	13.1631647536084
2008-10-01	13.5947574366123
2009-01-01	16.0005930672648
2009-04-01	16.8242608809888
2009-07-01	17.3471659396767
2009-10-01	16.7967504837652
2010-01-01	17.7513108412100
2010-04-01	17.0606848531375
2010-07-01	16.7881944426623
2010-10-01	16.3188716830958
2011-01-01	16.8893008119820
2011-04-01	16.3207535154276
2011-07-01	16.5780044632286
2011-10-01	15.8254548803969
2012-01-01	16.7271686252541
2012-04-01	16.3098326832093
2012-07-01	16.4084014746075
2012-10-01	16.0975794488363
2013-01-01	17.0505984187170
2013-04-01	16.3637962165360
2013-07-01	16.2596224367055
2013-10-01	15.2644582276118
2014-01-01	16.0469218337766
2014-04-01	14.9892133885842
2014-07-01	15.1793360113055
2014-10-01	14.2944347202000
2015-01-01	14.7026783675819
2015-04-01	14.1117343093521
2015-07-01	13.8018817470083
2015-10-01	13.0615364315648
2016-01-01	13.3974598949071
2016-04-01	13.0497116940626
2016-07-01	13.0096736859224
2016-10-01	12.4134051590619
2017-01-01	12.6036692892168
2017-04-01	12.0035450077159
2017-07-01	11.9000822089079
2017-10-01	11.2611046575006
2018-01-01	11.4144791370072
2018-04-01	10.9633299995387
2018-07-01	11.0815331895990