Quarter	Percent, Seasonally Adjusted
1999-04-01	91.6495107952092
1999-07-01	91.9830115428516
1999-10-01	92.0340993012503
2000-01-01	91.8259483950041
2000-04-01	91.8965730978842
2000-07-01	91.7136937860894
2000-10-01	91.6616630296271
2001-01-01	91.5730111818578
2001-04-01	91.2668790448962
2001-07-01	91.1152081555870
2001-10-01	91.1767462409302
2002-01-01	91.0223799672959
2002-04-01	91.1787242696654
2002-07-01	91.4544208508848
2002-10-01	91.6500703227652
2003-01-01	91.2219314926386
2003-04-01	91.3821449473710
2003-07-01	91.4214117117245
2003-10-01	91.1575458492860
2004-01-01	91.1225231613258
2004-04-01	90.9335523386198
2004-07-01	90.8539374010318
2004-10-01	91.1354377372570
2005-01-01	91.0974151116574
2005-04-01	90.9375929713151
2005-07-01	91.0768551885766
2005-10-01	91.2298501532336
2006-01-01	91.5423701011950
2006-04-01	91.6794948274991
2006-07-01	91.6562526220507
2006-10-01	91.7405509424059
2007-01-01	91.5941272689944
2007-04-01	91.6769226314803
2007-07-01	91.6858742192509
2007-10-01	91.3784740333106
2008-01-01	91.6478982010251
2008-04-01	91.6765914858852
2008-07-01	91.4506080106395
2008-10-01	91.7798263236667
2009-01-01	92.1035631818422
2009-04-01	91.5220464153689
2009-07-01	91.5555538053364
2009-10-01	91.4375346201391
2010-01-01	91.1150459417508
2010-04-01	91.3509876126818
2010-07-01	91.5913107904826
2010-10-01	91.6349540183052
2011-01-01	91.6571190753954
2011-04-01	91.6243272979848
2011-07-01	91.6432192168782
2011-10-01	91.7106504895137
2012-01-01	91.8159400867796
2012-04-01	91.9514164213524
2012-07-01	92.1102609463228
2012-10-01	92.0954791982058
2013-01-01	91.9587124080740
2013-04-01	91.9929841690778
2013-07-01	92.1033592788424
2013-10-01	92.0150576171446
2014-01-01	92.1877498798738
2014-04-01	92.3789206246512
2014-07-01	92.4023071634787
2014-10-01	91.8801322013835
2015-01-01	91.9923190967028
2015-04-01	91.7573100166006
2015-07-01	91.7901645974446
2015-10-01	92.1278947500724
2016-01-01	92.1443489690168
2016-04-01	92.2989121906827
2016-07-01	92.1885352333998
2016-10-01	92.0297247912083
2017-01-01	92.1194975994184
2017-04-01	92.4133338601457
2017-07-01	92.4406915767727
2017-10-01	92.5168585940441
2018-01-01	92.3919447947333
2018-04-01	92.3797925810556