Quarter	Percent, Seasonally Adjusted
1999-01-01	38.2984495718770
1999-04-01	40.4392355758927
1999-07-01	38.5018268211215
1999-10-01	40.1301053193887
2000-01-01	36.4750806557800
2000-04-01	35.0055050961765
2000-07-01	38.1760533207776
2000-10-01	36.0924247462763
2001-01-01	35.8064026771340
2001-04-01	32.9859169078037
2001-07-01	33.0648141097595
2001-10-01	32.7603908088640
2002-01-01	33.6272077441779
2002-04-01	33.8114521057510
2002-07-01	31.0828699831648
2002-10-01	31.4850576242471
2003-01-01	31.3947950007942
2003-04-01	30.0420851158937
2003-07-01	27.5305887680757
2003-10-01	32.2514842666703
2004-01-01	35.0314129538271
2004-04-01	36.6174997068169
2004-07-01	34.5391490909185
2004-10-01	35.1533120996921
2005-01-01	37.0221658248540
2005-04-01	32.9756646459784
2005-07-01	37.0143447490586
2005-10-01	38.0646045854998
2006-01-01	38.0485369773249
2006-04-01	38.8540798965261
2006-07-01	34.5212423710206
2006-10-01	34.1602622273023
2007-01-01	34.6773995737711
2007-04-01	35.1335126844099
2007-07-01	36.9830808264645
2007-10-01	34.8251531717536
2008-01-01	36.7068116629341
2008-04-01	36.3959972356100
2008-07-01	39.7142562106170
2008-10-01	36.7803807069941
2009-01-01	33.6399483323887
2009-04-01	36.5512114437319
2009-07-01	39.4315713661728
2009-10-01	33.5024893531964
2010-01-01	36.1685105480339
2010-04-01	36.3678461015833
2010-07-01	32.4879948239070
2010-10-01	34.1232834849997
2011-01-01	31.4950913988654
2011-04-01	31.5560407050777
2011-07-01	29.9515351696563
2011-10-01	36.1998540543668
2012-01-01	35.0568171001634
2012-04-01	25.3508152414828
2012-07-01	29.2181152847099
2012-10-01	30.4707123675702
2013-01-01	31.0558754683856
2013-04-01	30.8388411583272
2013-07-01	31.7118595477625
2013-10-01	27.0266122073832
2014-01-01	28.2277069510931
2014-04-01	31.3605745285282
2014-07-01	30.5712731472707
2014-10-01	31.6292110952197
2015-01-01	30.1205803210423
2015-04-01	34.0702619528543
2015-07-01	31.6574458715196
2015-10-01	30.8805154285505
2016-01-01	29.0585222857168
2016-04-01	30.9230477665976
2016-07-01	30.6112229622727
2016-10-01	31.5587519063298
2017-01-01	34.1928038316442
2017-04-01	33.7972312125957
2017-07-01	36.1566448465453
2017-10-01	35.5815056648142
2018-01-01	37.5375570513278
2018-04-01	35.6737089878944