Quarter	Percent, Seasonally Adjusted
2005-01-01	18.7662886789778
2005-04-01	18.6936180581057
2005-07-01	18.4616109362075
2005-10-01	18.3142027613154
2006-01-01	17.9393975746511
2006-04-01	17.3464090594778
2006-07-01	17.0903449927390
2006-10-01	16.7060991580629
2007-01-01	16.0613572653941
2007-04-01	15.5908925208201
2007-07-01	15.4277594561085
2007-10-01	14.9864837198539
2008-01-01	14.7977824252797
2008-04-01	15.2852281768055
2008-07-01	15.7599784071411
2008-10-01	16.6282800350482
2009-01-01	18.6144666975728
2009-04-01	19.8701575853710
2009-07-01	20.5968442999605
2009-10-01	20.6657799770312
2010-01-01	21.1523410715885
2010-04-01	21.1902010540753
2010-07-01	20.8850950848992
2010-10-01	21.0379758600925
2011-01-01	21.2486220771089
2011-04-01	21.3972055076061
2011-07-01	21.8145943892720
2011-10-01	22.2910632864553
2012-01-01	22.7543345104790
2012-04-01	23.0605512865034
2012-07-01	23.2373651633310
2012-10-01	23.7385984421771
2013-01-01	23.8301407467648
2013-04-01	23.7599161868158
2013-07-01	23.6334648839431
2013-10-01	23.3956566762283
2014-01-01	23.1784117943221
2014-04-01	22.2397151164119
2014-07-01	21.8410588728775
2014-10-01	21.5341629510616
2015-01-01	21.0486740032013
2015-04-01	20.6319935890483
2015-07-01	20.0771008231059
2015-10-01	19.6037057323156
2016-01-01	19.2511177459685
2016-04-01	18.9225752491758
2016-07-01	18.5803626595127
2016-10-01	18.0154819984041
2017-01-01	17.4088779718880
2017-04-01	17.0800611534455
2017-07-01	16.6202484366091
2017-10-01	16.1854388976603
2018-01-01	15.6507811165201
2018-04-01	15.2458313893348