Quarter	Percent, Seasonally Adjusted
1998-01-01	52.3788955084727
1998-04-01	51.6425043612643
1998-07-01	50.3243962468101
1998-10-01	50.8463055588720
1999-01-01	50.4285372574914
1999-04-01	51.3365232321335
1999-07-01	50.7375663890817
1999-10-01	52.3069853382914
2000-01-01	52.1203653454897
2000-04-01	50.4223413072185
2000-07-01	51.6962308229402
2000-10-01	51.6690931179788
2001-01-01	52.0088208847176
2001-04-01	52.2438213809782
2001-07-01	53.1648638760824
2001-10-01	52.3958638391708
2002-01-01	52.8523904201733
2002-04-01	53.1041949988250
2002-07-01	53.1490991363209
2002-10-01	52.4044089587643
2003-01-01	50.6082325195748
2003-04-01	48.9136769005716
2003-07-01	48.5202814197514
2003-10-01	47.6911338281250
2004-01-01	47.3942246380933
2004-04-01	47.7149411296941
2004-07-01	47.6652043633482
2004-10-01	46.5038607361535
2005-01-01	46.0586559120312
2005-04-01	46.7699847215893
2005-07-01	45.6178299962010
2005-10-01	45.5555116083040
2006-01-01	45.5819177943971
2006-04-01	46.4025217641718
2006-07-01	45.1977116790208
2006-10-01	44.8880902185460
2007-01-01	45.2154381849829
2007-04-01	44.2549649125487
2007-07-01	45.0434668826913
2007-10-01	44.2669803464813
2008-01-01	44.9821360385375
2008-04-01	44.2624278884394
2008-07-01	42.3715836327086
2008-10-01	42.8020880348500
2009-01-01	41.2084327912512
2009-04-01	40.8543285366446
2009-07-01	39.1034582304690
2009-10-01	39.2952756702776
2010-01-01	38.6644698200253
2010-04-01	38.2880376883039
2010-07-01	37.3019398676787
2010-10-01	37.5913190548161
2011-01-01	40.0844086734248
2011-04-01	39.6460862959137
2011-07-01	41.2754612602202
2011-10-01	40.4835630787724
2012-01-01	38.9982054462259
2012-04-01	39.6200175963198
2012-07-01	40.4660785772190
2012-10-01	37.6427030318610
2013-01-01	36.6322550096731
2013-04-01	36.3853937856778
2013-07-01	36.9492735118862
2013-10-01	34.8941717219078
2014-01-01	34.9492927649222
2014-04-01	34.4901477110371
2014-07-01	35.8869730245102
2014-10-01	33.6669142780308
2015-01-01	33.7883093141773
2015-04-01	33.5747684635603
2015-07-01	34.1366480396066
2015-10-01	35.3544909417243
2016-01-01	34.2476230326679
2016-04-01	35.3630031453485
2016-07-01	35.0157646604670
2016-10-01	35.4725876069764
2017-01-01	35.7506919151501
2017-04-01	35.2077479929452
2017-07-01	35.3858442139248
2017-10-01	35.9368006797228
2018-01-01	36.2601336333427
2018-04-01	35.8454158591465