Quarter	Percent, Seasonally Adjusted
2001-01-01	19.8192720108362
2001-04-01	20.0841692992077
2001-07-01	20.0902495615430
2001-10-01	20.2827462849700
2002-01-01	20.3761975001659
2002-04-01	20.6563216984462
2002-07-01	20.7450994473303
2002-10-01	20.7100444946421
2003-01-01	21.0776623808510
2003-04-01	20.7715707667088
2003-07-01	20.7667433853234
2003-10-01	20.7350895093160
2004-01-01	20.6284494875533
2004-04-01	20.8972068278196
2004-07-01	20.8819157882094
2004-10-01	21.0568724905843
2005-01-01	20.9155484195510
2005-04-01	18.9177308257734
2005-07-01	19.0774904322625
2005-10-01	19.0507489485669
2006-01-01	19.1203056820972
2006-04-01	18.8263569943735
2006-07-01	18.7943767092739
2006-10-01	18.5723813063143
2007-01-01	18.4228365389213
2007-04-01	18.7785627144406
2007-07-01	18.5053694006246
2007-10-01	18.5881010496567
2008-01-01	18.3722327608520
2008-04-01	18.2173540205500
2008-07-01	18.2749667423238
2008-10-01	18.4163322893964
2009-01-01	18.5907156564873
2009-04-01	18.5725422832714
2009-07-01	18.7852048544052
2009-10-01	18.5334029338638
2010-01-01	18.4358343088629
2010-04-01	18.1736322119884
2010-07-01	17.9589166897269
2010-10-01	17.9484471414359
2011-01-01	17.7553839182330
2011-04-01	17.5118256188541
2011-07-01	17.5454669545410
2011-10-01	17.5009938856274
2012-01-01	17.7024190083833
2012-04-01	17.5022201844470
2012-07-01	17.3219568908809
2012-10-01	17.0276423606103
2013-01-01	16.7421402043669
2013-04-01	16.7528624855524
2013-07-01	16.5748051313160
2013-10-01	16.5461491911994
2014-01-01	16.5033658806344
2014-04-01	16.4207322075099
2014-07-01	16.2555866708270
2014-10-01	16.3757616985239
2015-01-01	16.4082432336363
2015-04-01	16.5522821340534
2015-07-01	16.6337536469253
2015-10-01	16.3440681901412
2016-01-01	16.1746949572860
2016-04-01	16.0837839152663
2016-07-01	16.1663410100096
2016-10-01	16.0456752115563
2017-01-01	15.8560901389460
2017-04-01	15.7148919538003
2017-07-01	15.5655110940310
2017-10-01	15.6838419371652
2018-01-01	15.6846631228802
2018-04-01	15.6713938286721