Quarter	Percent, Seasonally Adjusted
1986-01-01	64.6936472984355
1986-04-01	65.3433575984831
1986-07-01	65.3999332096655
1986-10-01	65.0931789541363
1987-01-01	65.6200581559911
1987-04-01	66.6354735053693
1987-07-01	66.8783721425468
1987-10-01	67.2833223407608
1988-01-01	65.5980018420294
1988-04-01	66.3313497696846
1988-07-01	65.5755817536866
1988-10-01	65.5702133461210
1989-01-01	64.8489280833346
1989-04-01	63.9772660069288
1989-07-01	64.9044829816651
1989-10-01	64.7722530499576
1990-01-01	64.8102844240611
1990-04-01	65.6026635426970
1990-07-01	65.0719505691585
1990-10-01	65.2371746473019
1991-01-01	64.9688749225679
1991-04-01	64.8289655668102
1991-07-01	64.4225186656255
1991-10-01	63.8564170663767
1992-01-01	64.3048063135314
1992-04-01	65.0147070516174
1992-07-01	64.2946905947416
1992-10-01	64.6181429158324
1993-01-01	64.4115704404437
1993-04-01	64.6085497056401
1993-07-01	64.8960184428592
1993-10-01	65.3967998341332
1994-01-01	65.7419927686382
1994-04-01	66.4757412154172
1994-07-01	66.4157483072386
1994-10-01	67.2381090200596
1995-01-01	67.3348689804565
1995-04-01	67.7324018854918
1995-07-01	68.3736907560779
1995-10-01	67.9599373913058
1996-01-01	68.5470995551481
1996-04-01	69.1955599543360
1996-07-01	69.7871492381203
1996-10-01	69.0849186816832
1997-01-01	68.0408026299398
1997-04-01	68.4940728696401
1997-07-01	68.6547254732448
1997-10-01	68.0566403687145
1998-01-01	68.0338894281716
1998-04-01	66.8643863837056
1998-07-01	67.6324224236869
1998-10-01	67.7992267639651
1999-01-01	68.5111212136777
1999-04-01	68.9306599167248
1999-07-01	69.3006498563974
1999-10-01	69.8655791306511
2000-01-01	69.8814422318195
2000-04-01	68.9488869228823
2000-07-01	70.1485898480470
2000-10-01	70.7362248689428
2001-01-01	70.7757336682601
2001-04-01	70.7163277772534
2001-07-01	70.8140790429536
2001-10-01	71.8971650573658
2002-01-01	71.6410110207701
2002-04-01	70.5837491395056
2002-07-01	71.2370382142132
2002-10-01	72.3038370522349
2003-01-01	71.1646872520350
2003-04-01	71.0628281485310
2003-07-01	71.9775988159356
2003-10-01	72.0322569233244
2004-01-01	71.8537426386234
2004-04-01	71.3541917796328
2004-07-01	72.4887307832711
2004-10-01	73.2871043787451
2005-01-01	73.1281076360635
2005-04-01	73.7381474270673
2005-07-01	74.1518823740894
2005-10-01	73.4100583651559
2006-01-01	73.8622597011588
2006-04-01	74.5329325439993
2006-07-01	74.3481849211096
2006-10-01	73.1205664646182
2007-01-01	74.1768902114598
2007-04-01	74.3680672307810
2007-07-01	73.5379255338533
2007-10-01	74.8074546447422
2008-01-01	73.1820229893373
2008-04-01	74.8896536066529
2008-07-01	75.5470910436794
2008-10-01	75.4952797286916
2009-01-01	74.8504983293787
2009-04-01	74.3876312926245
2009-07-01	73.5311263451599
2009-10-01	73.4890677049172
2010-01-01	73.0021420644315
2010-04-01	72.4768860958440
2010-07-01	72.4418611483577
2010-10-01	72.5311300432745
2011-01-01	73.5256278999519
2011-04-01	73.5941079546801
2011-07-01	73.0109551462960
2011-10-01	73.8207286542902
2012-01-01	73.3084366941871
2012-04-01	73.0692283458532
2012-07-01	72.9675536876282
2012-10-01	72.9764131604190
2013-01-01	73.6464662431570
2013-04-01	73.1298445343962
2013-07-01	74.4511618763469
2013-10-01	74.8162433521130
2014-01-01	75.0962789436057
2014-04-01	74.1292274430971
2014-07-01	75.2259847121063
2014-10-01	75.0971450915584
2015-01-01	75.7547063941268
2015-04-01	74.5671667875156
2015-07-01	74.5654206937482
2015-10-01	75.0860229153506
2016-01-01	75.8124895629343
2016-04-01	76.5702278213533
2016-07-01	77.2686830131726
2016-10-01	77.8233648324926
2017-01-01	77.8557206930399
2017-04-01	77.4987616632337
2017-07-01	78.6015773506741
2017-10-01	78.6782958292194
2018-01-01	78.5844043397608
2018-04-01	78.9688166317512
2018-07-01	79.0829462412788