Quarter	Percent, Seasonally Adjusted
1999-01-01	47.2618372705590
1999-04-01	47.3365229282580
1999-07-01	47.0755610963167
1999-10-01	47.2190819733085
2000-01-01	47.4439004675996
2000-04-01	47.4901817234861
2000-07-01	48.4833692770749
2000-10-01	48.1520318027672
2001-01-01	48.2681351061933
2001-04-01	47.6872911518481
2001-07-01	48.3521823741798
2001-10-01	48.0795841234046
2002-01-01	48.4666788896707
2002-04-01	48.3002627093685
2002-07-01	47.4506519283029
2002-10-01	46.4704729220758
2003-01-01	46.6920998124524
2003-04-01	46.3611190610683
2003-07-01	45.6917718710920
2003-10-01	47.1860108723133
2004-01-01	48.2987975013726
2004-04-01	49.0877848475450
2004-07-01	49.7578647654772
2004-10-01	48.4279909709614
2005-01-01	48.8760992070227
2005-04-01	48.9056189732284
2005-07-01	49.2821765370438
2005-10-01	49.6353633882497
2006-01-01	49.3036703440574
2006-04-01	50.3046056543727
2006-07-01	49.1305371776557
2006-10-01	49.0145985382737
2007-01-01	49.5159153885323
2007-04-01	50.6100906048700
2007-07-01	50.6302997510991
2007-10-01	50.1003783159055
2008-01-01	50.2362372864599
2008-04-01	50.4587791740187
2008-07-01	51.5985381641409
2008-10-01	51.5382157423398
2009-01-01	50.6432434190826
2009-04-01	50.3161042601230
2009-07-01	50.7521479869269
2009-10-01	50.2968910246756
2010-01-01	50.0729209032787
2010-04-01	49.8146962403754
2010-07-01	48.7303212904281
2010-10-01	49.4575660281280
2011-01-01	48.1288354925276
2011-04-01	47.8830572499894
2011-07-01	47.9764582751495
2011-10-01	48.2238225177939
2012-01-01	48.7888932869017
2012-04-01	46.7848440909460
2012-07-01	46.7212707658484
2012-10-01	47.0695464567769
2013-01-01	45.7573967011009
2013-04-01	45.7808624304656
2013-07-01	46.2891520316323
2013-10-01	46.0653728497675
2014-01-01	46.6107386918386
2014-04-01	47.5197545672584
2014-07-01	46.5644533536213
2014-10-01	46.1634519968834
2015-01-01	45.9490321801160
2015-04-01	46.9565800073102
2015-07-01	46.8677336724403
2015-10-01	46.9680200394549
2016-01-01	46.9035511219144
2016-04-01	47.5324900462958
2016-07-01	47.2873399659816
2016-10-01	48.4481701637606
2017-01-01	49.3874211931729
2017-04-01	48.9034661682798
2017-07-01	49.9894012061662
2017-10-01	50.8575670774056
2018-01-01	50.7283158914159
2018-04-01	50.5598636562635