Quarter	Percent, Seasonally Adjusted
1998-01-01	31.9187113210523
1998-04-01	32.1944691705508
1998-07-01	32.4489128940592
1998-10-01	32.6980758844649
1999-01-01	32.9135739242343
1999-04-01	33.0571749982097
1999-07-01	33.2937456342882
1999-10-01	33.4762897329991
2000-01-01	33.5846036903238
2000-04-01	34.0425083582460
2000-07-01	34.4249438103596
2000-10-01	34.9210157150864
2001-01-01	35.2661570791474
2001-04-01	35.3840549584188
2001-07-01	35.7085815219258
2001-10-01	35.8504163646840
2002-01-01	36.2045968183835
2002-04-01	36.1819438293543
2002-07-01	36.5033285337244
2002-10-01	36.5209795370903
2003-01-01	36.7351211464043
2003-04-01	36.9726692304880
2003-07-01	37.1541002190116
2003-10-01	36.8633277649356
2004-01-01	39.0952254260832
2004-04-01	39.0872348627856
2004-07-01	39.1552164376200
2004-10-01	39.4325099892916
2005-01-01	39.1773817555157
2005-04-01	39.0234212615947
2005-07-01	38.7493494865330
2005-10-01	39.1982601908034
2006-01-01	39.6937225886610
2006-04-01	39.9321553924224
2006-07-01	39.7802426254918
2006-10-01	40.0087387698873
2007-01-01	39.7848136745868
2007-04-01	39.9679603600945
2007-07-01	40.4374309668618
2007-10-01	40.3634919283354
2008-01-01	40.6749426840338
2008-04-01	40.7511956587937
2008-07-01	40.8264742569913
2008-10-01	40.5609246051266
2009-01-01	40.2071469465577
2009-04-01	40.1785549824170
2009-07-01	39.8997548461153
2009-10-01	39.7346561623918
2010-01-01	39.7104104935531
2010-04-01	39.8800337315854
2010-07-01	39.8342334003949
2010-10-01	40.0400716812630
2011-01-01	40.3097707819759
2011-04-01	40.1496323073283
2011-07-01	40.1086353875575
2011-10-01	40.3415186041700
2012-01-01	40.5746528635278
2012-04-01	40.7537548985031
2012-07-01	40.6344797930656
2012-10-01	40.5405743229351
2013-01-01	40.2978526779029
2013-04-01	40.0112949692537
2013-07-01	39.9885859785998
2013-10-01	40.1520110689803
2014-01-01	40.2370273831001
2014-04-01	40.1113975415274
2014-07-01	40.4055217837911
2014-10-01	40.5833122010291
2015-01-01	40.5809165647224
2015-04-01	40.5737521043854
2015-07-01	40.6631959363457
2015-10-01	40.7866957490760
2016-01-01	41.0437712281563
2016-04-01	41.4513610846796
2016-07-01	41.5466795715224
2016-10-01	41.6204962050189
2017-01-01	41.9358833424839
2017-04-01	42.0006334537087
2017-07-01	42.3104517395338
2017-10-01	42.4528361702051
2018-01-01	42.5090239936320
2018-04-01	42.9859430677698