Quarter	Percent, Seasonally Adjusted
1998-01-01	54.6118320683469
1998-04-01	59.6549213835016
1998-07-01	53.0713996322089
1998-10-01	52.0730338164931
1999-01-01	51.7624999728554
1999-04-01	46.7040168057515
1999-07-01	48.5791746966247
1999-10-01	49.1764288490316
2000-01-01	47.9658038604270
2000-04-01	46.8356088557851
2000-07-01	47.8511548296559
2000-10-01	48.1907228696753
2001-01-01	48.2173413486780
2001-04-01	47.4036613983562
2001-07-01	48.2596076753710
2001-10-01	47.8040178063679
2002-01-01	48.9458430267445
2002-04-01	48.0324861572927
2002-07-01	48.7541432556499
2002-10-01	48.3967579927612
2003-01-01	47.9880509823320
2003-04-01	48.8800137342361
2003-07-01	48.9761899500269
2003-10-01	51.4628940903156
2004-01-01	51.1349009537594
2004-04-01	50.4548208596956
2004-07-01	49.6388287890206
2004-10-01	49.9452658834695
2005-01-01	49.4662827400301
2005-04-01	49.6690793731699
2005-07-01	50.1140269628873
2005-10-01	48.0970188437617
2006-01-01	48.0808501713135
2006-04-01	48.7890581225565
2006-07-01	47.7505924646302
2006-10-01	48.1839603491194
2007-01-01	47.6775513366762
2007-04-01	47.2078812140060
2007-07-01	45.7804920394426
2007-10-01	45.6330764602434
2008-01-01	46.6803553006612
2008-04-01	45.4476249558056
2008-07-01	47.3676568704723
2008-10-01	46.5999540293272
2009-01-01	47.9164370675652
2009-04-01	47.7953204450941
2009-07-01	51.9762248582320
2009-10-01	50.4943212024961
2010-01-01	50.7114395612014
2010-04-01	50.8000807946333
2010-07-01	50.9034570031552
2010-10-01	50.0789919056296
2011-01-01	49.7517754666428
2011-04-01	49.0377204344963
2011-07-01	48.9043080716005
2011-10-01	50.2340379330525
2012-01-01	49.1191035062916
2012-04-01	48.7318119651762
2012-07-01	47.7670807651517
2012-10-01	47.9915045583548
2013-01-01	48.0327209119024
2013-04-01	47.6904642232697
2013-07-01	49.3239573281298
2013-10-01	47.6401115582940
2014-01-01	48.0134833658849
2014-04-01	47.9610542603557
2014-07-01	48.8789396587620
2014-10-01	46.8824396628977
2015-01-01	47.3514059957990
2015-04-01	47.3988242598443
2015-07-01	47.8828505931930
2015-10-01	48.5506773817684
2016-01-01	47.9271382727212
2016-04-01	48.2588079505416
2016-07-01	47.5388779015780
2016-10-01	47.5176704058603
2017-01-01	47.0801286549659
2017-04-01	47.5229026299922
2017-07-01	46.1259606678121
2017-10-01	46.3188377918141
2018-01-01	46.0211645133177
2018-04-01	46.0367313047323