Quarter	Percent, Seasonally Adjusted
1998-01-01	34.8543393974317
1998-04-01	29.7458014951805
1998-07-01	35.4228905674826
1998-10-01	37.3061008366405
1999-01-01	37.9095514382202
1999-04-01	41.8579296768006
1999-07-01	40.4772891400867
1999-10-01	39.7752837083846
2000-01-01	40.1992707768451
2000-04-01	41.7628610951958
2000-07-01	41.4603061668275
2000-10-01	40.9374048657282
2001-01-01	41.7321963864710
2001-04-01	42.2209927236534
2001-07-01	41.4433116098752
2001-10-01	41.7456398045235
2002-01-01	40.0762413586794
2002-04-01	40.8499296548363
2002-07-01	40.9011124055435
2002-10-01	40.8083508002129
2003-01-01	40.7520430352512
2003-04-01	40.3351836127634
2003-07-01	39.6126854326386
2003-10-01	37.8696246446900
2004-01-01	38.6878102323654
2004-04-01	39.3315347764006
2004-07-01	39.8901484532315
2004-10-01	39.7840311895540
2005-01-01	40.3179936022811
2005-04-01	40.0637671593607
2005-07-01	39.7480464242015
2005-10-01	41.8447299294299
2006-01-01	41.9752778550787
2006-04-01	41.0097877310054
2006-07-01	42.5912914014147
2006-10-01	42.8139825191014
2007-01-01	42.6443100730145
2007-04-01	44.3777203117368
2007-07-01	45.8592820236181
2007-10-01	45.5263777763372
2008-01-01	44.9910949819519
2008-04-01	45.6033760030024
2008-07-01	43.9175366520650
2008-10-01	44.2105499441966
2009-01-01	42.9772844013828
2009-04-01	40.5689972571823
2009-07-01	37.0420589070356
2009-10-01	37.8327679334084
2010-01-01	38.3152965271782
2010-04-01	38.6236969951260
2010-07-01	39.0760032739837
2010-10-01	39.2148371175953
2011-01-01	40.0286579586880
2011-04-01	40.8756044049767
2011-07-01	40.6398171941781
2011-10-01	39.9803729813924
2012-01-01	41.1175667140856
2012-04-01	42.0562799086834
2012-07-01	42.0839801192022
2012-10-01	42.0054965712196
2013-01-01	41.5345292816085
2013-04-01	41.7322267480249
2013-07-01	40.5952003403491
2013-10-01	42.1644286839362
2014-01-01	41.2146750656895
2014-04-01	41.9054009016847
2014-07-01	41.0582741574530
2014-10-01	41.2903423192148
2015-01-01	41.1082741333361
2015-04-01	40.5899057649947
2015-07-01	40.0949351578109
2015-10-01	40.1624765430883
2016-01-01	41.4322421059079
2016-04-01	41.3128654494892
2016-07-01	41.8633937291368
2016-10-01	42.0785593812718
2017-01-01	42.0369520402820
2017-04-01	41.2034527171170
2017-07-01	42.9621847702408
2017-10-01	43.8843796382677
2018-01-01	44.0577097076139
2018-04-01	45.3239948188991