Quarter	Percent, Seasonally Adjusted
1999-04-01	75.2432268401725
1999-07-01	75.4642088197430
1999-10-01	75.5108528436388
2000-01-01	75.4053610780332
2000-04-01	75.5183728642059
2000-07-01	75.5920473899742
2000-10-01	75.3013729914866
2001-01-01	75.3781010008083
2001-04-01	75.1605479879326
2001-07-01	75.2075683562632
2001-10-01	75.2698754954454
2002-01-01	75.0993724305936
2002-04-01	75.3123867035458
2002-07-01	75.3219811146835
2002-10-01	75.4474705021105
2003-01-01	75.2582283260137
2003-04-01	75.3084928403204
2003-07-01	75.3153303571607
2003-10-01	75.3122520076664
2004-01-01	75.4487063245344
2004-04-01	75.2871590559017
2004-07-01	75.1011057587884
2004-10-01	75.2995619457752
2005-01-01	75.5541970352749
2005-04-01	75.2317988229767
2005-07-01	75.3157711391706
2005-10-01	75.4258078367879
2006-01-01	75.6272470807010
2006-04-01	75.7840704887853
2006-07-01	75.8454267608453
2006-10-01	75.6148038379026
2007-01-01	75.4692487163933
2007-04-01	75.4502623178120
2007-07-01	75.5008823650723
2007-10-01	75.6104038863079
2008-01-01	75.7102994602518
2008-04-01	75.8191396041056
2008-07-01	75.7815626104798
2008-10-01	75.9207536172779
2009-01-01	75.9633516052131
2009-04-01	75.6697200574955
2009-07-01	75.5677394833811
2009-10-01	75.4026822269595
2010-01-01	75.1715841435870
2010-04-01	75.3875649317089
2010-07-01	75.6144076843046
2010-10-01	75.3385892257152
2011-01-01	75.3852904667908
2011-04-01	75.4748867532249
2011-07-01	75.5012647795105
2011-10-01	75.6669170614734
2012-01-01	75.7065956902476
2012-04-01	75.9642666984114
2012-07-01	76.1391163869199
2012-10-01	76.4224834708944
2013-01-01	76.2682505668902
2013-04-01	76.3681254886805
2013-07-01	76.5986273421468
2013-10-01	76.5277319047159
2014-01-01	76.6373437304427
2014-04-01	76.7361370825564
2014-07-01	76.7344765388146
2014-10-01	76.6479823596184
2015-01-01	76.7973529623121
2015-04-01	76.7828722963589
2015-07-01	76.8821604061634
2015-10-01	77.0898834264921
2016-01-01	77.1839110897587
2016-04-01	77.4088542526610
2016-07-01	77.2971562602638
2016-10-01	77.3565605097912
2017-01-01	77.4743138851933
2017-04-01	77.6956190894291
2017-07-01	77.4446642549559
2017-10-01	77.7246629310806
2018-01-01	78.0184118317101
2018-04-01	77.8595038834707