Quarter	Percent, Seasonally Adjusted
1986-01-01	71.2243882708633
1986-04-01	71.3402917762834
1986-07-01	71.4362710174757
1986-10-01	71.2699169859320
1987-01-01	71.1939322992433
1987-04-01	70.2693687222705
1987-07-01	71.1805957564669
1987-10-01	71.1246932465359
1988-01-01	70.4968967772154
1988-04-01	69.7983703092773
1988-07-01	69.6274035124055
1988-10-01	69.5198750211890
1989-01-01	69.9159644925220
1989-04-01	69.3358103333275
1989-07-01	69.5203758678164
1989-10-01	69.2332634184556
1990-01-01	69.1832791482642
1990-04-01	68.8992148445789
1990-07-01	69.4648380211519
1990-10-01	68.9915776278260
1991-01-01	68.9789001352557
1991-04-01	70.0260977144007
1991-07-01	68.8098199217087
1991-10-01	69.1673939066760
1992-01-01	68.4595113984587
1992-04-01	68.7830365648567
1992-07-01	68.0963722600831
1992-10-01	67.0808464539001
1993-01-01	66.2861883889076
1993-04-01	66.8612778485096
1993-07-01	64.9297367915252
1993-10-01	65.5269532660848
1994-01-01	65.3209765186768
1994-04-01	65.7808203530462
1994-07-01	66.4134773138154
1994-10-01	65.2484142713308
1995-01-01	65.5767085765434
1995-04-01	66.1875829341274
1995-07-01	66.2640379503423
1995-10-01	66.1626477792674
1996-01-01	65.6961024688166
1996-04-01	65.9243650684700
1996-07-01	66.5891492178904
1996-10-01	66.1869674649625
1997-01-01	66.3570159660467
1997-04-01	65.6551738600520
1997-07-01	64.0557270186318
1997-10-01	65.6127259801122
1998-01-01	65.6526954270130
1998-04-01	64.9253940497756
1998-07-01	64.6461042598105
1998-10-01	64.3685281952549
1999-01-01	64.8622460056924
1999-04-01	64.7450699664668
1999-07-01	64.1123124764658
1999-10-01	63.6287868078771
2000-01-01	64.1978807383393
2000-04-01	64.3816639689319
2000-07-01	64.3410608905009
2000-10-01	64.8162961414250
2001-01-01	65.5793753943171
2001-04-01	65.1938394975281
2001-07-01	64.6926314329778
2001-10-01	64.7348580156952
2002-01-01	64.9513155713940
2002-04-01	65.3094217199937
2002-07-01	65.0999840682519
2002-10-01	64.6146302078018
2003-01-01	63.4665365909136
2003-04-01	63.2208732060371
2003-07-01	63.8762769042708
2003-10-01	63.2261110808164
2004-01-01	62.5900515161442
2004-04-01	62.1714607769995
2004-07-01	61.9640073484754
2004-10-01	60.7047432942754
2005-01-01	60.7237575820827
2005-04-01	60.3456842843440
2005-07-01	60.7787991467659
2005-10-01	61.1348295425642
2006-01-01	61.0491218933129
2006-04-01	61.0653801618816
2006-07-01	61.9122576190346
2006-10-01	62.0141272935434
2007-01-01	61.0249449966013
2007-04-01	61.3656145167924
2007-07-01	60.9812181271436
2007-10-01	60.1761039685950
2008-01-01	59.3945106228219
2008-04-01	58.9811205032197
2008-07-01	59.3274760431775
2008-10-01	58.8267468146252
2009-01-01	58.9949167526928
2009-04-01	58.6906385465778
2009-07-01	58.7726734482619
2009-10-01	58.4069390742105
2010-01-01	55.7350423579776
2010-04-01	55.1724475561207
2010-07-01	53.9914409049986
2010-10-01	53.7893918594676
2011-01-01	53.4412099690303
2011-04-01	52.3593183803951
2011-07-01	52.2760050031111
2011-10-01	52.5545421282261
2012-01-01	52.3015956383502
2012-04-01	52.5237190761332
2012-07-01	52.0745386248202
2012-10-01	52.7188449146451
2013-01-01	52.3758655866447
2013-04-01	52.0933143609456
2013-07-01	52.5841323527933
2013-10-01	52.0945427006110
2014-01-01	51.4812351451026
2014-04-01	51.8542651625866
2014-07-01	51.3255062335799
2014-10-01	51.7005000809501
2015-01-01	52.2309741760555
2015-04-01	51.6633956317641
2015-07-01	51.5024041965937
2015-10-01	51.6932380876797
2016-01-01	52.2902795003839
2016-04-01	51.8387276897377
2016-07-01	51.7802270102930
2016-10-01	51.9660972170721
2017-01-01	52.2053683831423
2017-04-01	51.6074950328265
2017-07-01	51.0158344591761
2017-10-01	51.0356791441458
2018-01-01	50.6520126717129
2018-04-01	50.7941375863935
2018-07-01	51.2794491576337