Quarter	Percent, Seasonally Adjusted
2000-01-01	20.1697998787144
2000-04-01	21.0507002629809
2000-07-01	21.3777013752456
2000-10-01	20.0284354330222
2001-01-01	19.4066515495087
2001-04-01	18.9555006180470
2001-07-01	17.7548115601213
2001-10-01	17.8904791537026
2002-01-01	18.7131910581977
2002-04-01	16.3368324442150
2002-07-01	16.8083983344085
2002-10-01	17.8281002936526
2003-01-01	16.5967064901518
2003-04-01	17.2903653750484
2003-07-01	18.3847380284788
2003-10-01	17.9940684820706
2004-01-01	17.4353907753107
2004-04-01	18.2916307161346
2004-07-01	18.1556195965418
2004-10-01	18.0450764171020
2005-01-01	17.7387173396675
2005-04-01	16.4338940698764
2005-07-01	17.2891385446593
2005-10-01	15.0474709445081
2006-01-01	15.9529806884971
2006-04-01	16.4790741915029
2006-07-01	15.2422648173356
2006-10-01	15.8409741601131
2007-01-01	16.9776509085846
2007-04-01	16.1079090071962
2007-07-01	15.1878445954610
2007-10-01	15.0550538537698
2008-01-01	12.6221474758605
2008-04-01	11.9860017497813
2008-07-01	12.0058680219003
2008-10-01	15.1459293394777
2009-01-01	13.6516609256840
2009-04-01	14.1847351282662
2009-07-01	14.1108604814555
2009-10-01	13.3583874274001
2010-01-01	15.6885397412200
2010-04-01	14.3660739398106
2010-07-01	14.4430248828862
2010-10-01	14.0436758024329
2011-01-01	12.8970163618864
2011-04-01	13.0838887856175
2011-07-01	12.3172698860772
2011-10-01	12.7773938416647
2012-01-01	13.4086205087607
2012-04-01	13.3972530453959
2012-07-01	13.8524162922882
2012-10-01	13.2965081870191
2013-01-01	13.8826304924801
2013-04-01	14.1044646810805
2013-07-01	14.1469120771563
2013-10-01	14.6333092699322
2014-01-01	13.4927853522311
2014-04-01	14.9225919057984
2014-07-01	15.4805073391077
2014-10-01	15.3695466149940
2015-01-01	17.8725209869281
2015-04-01	17.9216991064122
2015-07-01	17.5892383303722
2015-10-01	18.5757307028562
2016-01-01	19.3353188673001
2016-04-01	18.5177921596827
2016-07-01	18.9763050803927
2016-10-01	19.2902329753005
2017-01-01	19.1059443709948
2017-04-01	19.9409726955442
2017-07-01	19.9010728656384
2017-10-01	18.9021856561124
2018-01-01	19.5918883245996
2018-04-01	18.3211936669818