Quarter	Percent, Seasonally Adjusted
1999-01-01	93.9927277771103
1999-04-01	93.9191499687606
1999-07-01	93.7389772720236
1999-10-01	93.7681936824336
2000-01-01	93.9623514768522
2000-04-01	94.0313510862009
2000-07-01	94.0466743569998
2000-10-01	93.9647494763628
2001-01-01	93.7231055466021
2001-04-01	93.5593938375004
2001-07-01	93.6371631961869
2001-10-01	93.6950608876368
2002-01-01	94.1526009173696
2002-04-01	94.2459546590468
2002-07-01	94.1425118605269
2002-10-01	94.5433177505988
2003-01-01	94.9937932392382
2003-04-01	94.5873814995082
2003-07-01	94.5923569713818
2003-10-01	94.2888053624131
2004-01-01	92.4407068335090
2004-04-01	92.2091115524548
2004-07-01	92.0989877060568
2004-10-01	91.4438546415343
2005-01-01	91.7580582357353
2005-04-01	92.0564183792005
2005-07-01	92.0645825437443
2005-10-01	92.1002725102696
2006-01-01	92.0977033199058
2006-04-01	92.2156577331904
2006-07-01	92.1138812035048
2006-10-01	92.2298884058619
2007-01-01	92.5493615951037
2007-04-01	92.5066649482896
2007-07-01	92.6090919848122
2007-10-01	92.4937818051136
2008-01-01	92.3258700875238
2008-04-01	92.2594962101096
2008-07-01	91.9157463517900
2008-10-01	91.7946941747686
2009-01-01	91.8493826160453
2009-04-01	91.8102133791832
2009-07-01	91.8924427133488
2009-10-01	92.0482479900325
2010-01-01	91.7963586907209
2010-04-01	91.9327914237186
2010-07-01	92.0491310553944
2010-10-01	91.8390937522541
2011-01-01	91.9656955659878
2011-04-01	91.9294013089411
2011-07-01	91.8749158450894
2011-10-01	92.1248455875178
2012-01-01	92.1045801818040
2012-04-01	92.2922692327046
2012-07-01	92.2982823133126
2012-10-01	92.3908219542106
2013-01-01	92.4707559069641
2013-04-01	92.1652526732022
2013-07-01	92.0792679715711
2013-10-01	91.6911085227234
2014-01-01	91.2845103021049
2014-04-01	91.4516685453435
2014-07-01	91.5639153602650
2014-10-01	91.5118640650886
2015-01-01	91.7616911513791
2015-04-01	91.6345734436596
2015-07-01	91.4509422835791
2015-10-01	91.6457695188393
2016-01-01	91.6721425255021
2016-04-01	91.8161382840625
2016-07-01	91.9247917404058
2016-10-01	91.7361130651604
2017-01-01	91.9859764023851
2017-04-01	92.2935423249201
2017-07-01	92.2926912579171
2017-10-01	92.4337625765790
2018-01-01	92.3902689332420
2018-04-01	92.2375040435338