Quarter	Percent, Seasonally Adjusted
1986-01-01	67.1628264125582
1986-04-01	66.3464505111268
1986-07-01	66.5503614604725
1986-10-01	63.6418812635043
1987-01-01	64.2536444897702
1987-04-01	62.7955000425135
1987-07-01	63.2877723992498
1987-10-01	61.2483460739286
1988-01-01	61.9672899451810
1988-04-01	58.8340099180556
1988-07-01	56.6464431791890
1988-10-01	56.2915810569867
1989-01-01	54.2523405552242
1989-04-01	54.3469608228620
1989-07-01	53.5740026727168
1989-10-01	54.1268743123137
1990-01-01	54.4676789721996
1990-04-01	53.6308531021271
1990-07-01	53.7216358876342
1990-10-01	52.9887131177832
1991-01-01	53.1625301072562
1991-04-01	53.1957529123885
1991-07-01	52.7420461414472
1991-10-01	52.9562836181849
1992-01-01	52.4448268518204
1992-04-01	52.1181758523831
1992-07-01	51.6026186161345
1992-10-01	51.9968525788174
1993-01-01	53.2314340503572
1993-04-01	55.6415572737528
1993-07-01	56.0815227804212
1993-10-01	56.6938131297054
1994-01-01	57.3069247663336
1994-04-01	58.6383771330315
1994-07-01	59.2509858958369
1994-10-01	60.9031799943679
1995-01-01	61.7011577182741
1995-04-01	61.8702407664518
1995-07-01	63.1804205262846
1995-10-01	63.8586282689099
1996-01-01	65.6483394483984
1996-04-01	65.5464859437541
1996-07-01	65.2414633418399
1996-10-01	66.2580891749930
1997-01-01	65.1777741955468
1997-04-01	66.9905573739900
1997-07-01	65.6306542997520
1997-10-01	65.4068064787157
1998-01-01	66.6478209225798
1998-04-01	66.9176096835104
1998-07-01	66.8438327173783
1998-10-01	66.5571814928726
1999-01-01	67.5144628605784
1999-04-01	67.3557398506430
1999-07-01	66.9537560764844
1999-10-01	66.9562384150170
2000-01-01	66.8125081524411
2000-04-01	66.9165613223706
2000-07-01	67.9674626144654
2000-10-01	69.8325472701532
2001-01-01	70.0292105414682
2001-04-01	70.4607210873105
2001-07-01	70.4568589912539
2001-10-01	71.8921008512025
2002-01-01	74.1512030957101
2002-04-01	74.8994826701541
2002-07-01	74.6086433434164
2002-10-01	74.4815139044687
2003-01-01	72.6950213041818
2003-04-01	73.3891569875071
2003-07-01	73.1246812832164
2003-10-01	74.2330954763821
2004-01-01	73.7541912144606
2004-04-01	76.0994695248133
2004-07-01	76.5388165352866
2004-10-01	78.3452063089551
2005-01-01	77.7099922706760
2005-04-01	78.0167021320584
2005-07-01	77.9479526468421
2005-10-01	78.5829127156747
2006-01-01	78.8957475466190
2006-04-01	80.2353339553898
2006-07-01	79.5402846331789
2006-10-01	79.3881972349091
2007-01-01	81.2156105498138
2007-04-01	80.8497496289224
2007-07-01	79.7803791176058
2007-10-01	80.7371485490819
2008-01-01	80.0069849908572
2008-04-01	80.0528259284001
2008-07-01	79.1121817772616
2008-10-01	80.2862140130337
2009-01-01	79.9104408680186
2009-04-01	80.1643621604878
2009-07-01	79.0589851333934
2009-10-01	78.8182764532937
2010-01-01	78.9652593995660
2010-04-01	79.2694633830469
2010-07-01	80.6059191661431
2010-10-01	78.9383220570085
2011-01-01	79.8536305536014
2011-04-01	79.2673403680208
2011-07-01	80.5821790195646
2011-10-01	80.6976988026075
2012-01-01	80.6708641258035
2012-04-01	79.8861723780658
2012-07-01	78.6039929686117
2012-10-01	79.0766694845567
2013-01-01	78.5496865276590
2013-04-01	79.9607054060794
2013-07-01	79.0036903106441
2013-10-01	79.6415283893364
2014-01-01	80.7080656334046
2014-04-01	81.2035788978686
2014-07-01	80.1996674507421
2014-10-01	80.9073801801068
2015-01-01	81.1755728245258
2015-04-01	80.6793979456647
2015-07-01	80.0398262038862
2015-10-01	80.1835788106186
2016-01-01	80.3163642332664
2016-04-01	81.6486299565880
2016-07-01	81.9619458526855
2016-10-01	82.6406869738201
2017-01-01	84.2454986306363
2017-04-01	83.6011473202514
2017-07-01	84.5191592014521
2017-10-01	85.1477230806057
2018-01-01	84.3356680790759
2018-04-01	85.0514976612512
2018-07-01	84.6535987436432