Quarter	Percent, Seasonally Adjusted
1998-01-01	71.4329983557781
1998-04-01	71.6824494677044
1998-07-01	71.9872838405684
1998-10-01	71.8677300838742
1999-01-01	71.5165138168542
1999-04-01	71.1005664740473
1999-07-01	70.9096908139175
1999-10-01	70.8909629066430
2000-01-01	71.2923677080740
2000-04-01	71.4357814063567
2000-07-01	71.5164014112784
2000-10-01	71.7946217194561
2001-01-01	71.2425465751963
2001-04-01	71.2454290546357
2001-07-01	71.3709761915086
2001-10-01	71.2609910078599
2002-01-01	71.2104368731890
2002-04-01	71.9178019326685
2002-07-01	72.0568350248158
2002-10-01	72.3109378690552
2003-01-01	72.7819623272465
2003-04-01	72.6858410377321
2003-07-01	72.8041624701276
2003-10-01	72.8705614606029
2004-01-01	72.8165134318977
2004-04-01	73.0640032177976
2004-07-01	72.9394871259858
2004-10-01	73.1736519679466
2005-01-01	73.4592473444135
2005-04-01	73.4379665221731
2005-07-01	73.1141400536442
2005-10-01	73.5395336150309
2006-01-01	73.9565833401888
2006-04-01	73.7661493172851
2006-07-01	73.9483632179371
2006-10-01	74.0957926886797
2007-01-01	74.1240519341128
2007-04-01	73.9819253326507
2007-07-01	74.2558499147617
2007-10-01	74.3698316039043
2008-01-01	74.4525701574278
2008-04-01	74.5947979154704
2008-07-01	74.2313386943074
2008-10-01	74.1373274202061
2009-01-01	73.3710547201715
2009-04-01	73.1408184989097
2009-07-01	72.9648021511574
2009-10-01	72.3522539197573
2010-01-01	71.8045867688681
2010-04-01	70.7077837571361
2010-07-01	69.9224953827179
2010-10-01	68.9294724866289
2011-01-01	67.4837597281280
2011-04-01	66.3255440927344
2011-07-01	64.7397319486696
2011-10-01	62.8915691019212
2012-01-01	61.9048491986305
2012-04-01	60.3068911547970
2012-07-01	59.2324669993109
2012-10-01	58.9210055306449
2013-01-01	58.1180506242970
2013-04-01	57.9049586547564
2013-07-01	57.7188136705089
2013-10-01	57.7595170948401
2014-01-01	57.8495068717753
2014-04-01	57.7832818499962
2014-07-01	58.0774815536834
2014-10-01	58.1017001010262
2015-01-01	58.3278263303180
2015-04-01	58.9804498681112
2015-07-01	59.5624487395461
2015-10-01	60.2556366829278
2016-01-01	60.5292483193759
2016-04-01	60.9496558980220
2016-07-01	61.1660603373433
2016-10-01	61.1987648206316
2017-01-01	61.8005685995326
2017-04-01	62.5551098406560
2017-07-01	63.2690484462830
2017-10-01	63.3266919589562
2018-01-01	63.8337304208707
2018-04-01	64.5064145459830