Quarter	Percent, Seasonally Adjusted
1986-01-01	69.3926271340148
1986-04-01	67.5790014158506
1986-07-01	67.7977283372213
1986-10-01	68.3514659281502
1987-01-01	68.5755250792497
1987-04-01	69.0293152734035
1987-07-01	66.5791340146740
1987-10-01	66.4749145050485
1988-01-01	66.5275815916554
1988-04-01	65.1646572783204
1988-07-01	64.0363231127647
1988-10-01	63.0475103668359
1989-01-01	61.7157199987798
1989-04-01	61.6013290143407
1989-07-01	60.9641366445044
1989-10-01	62.7462178913165
1990-01-01	63.9501667260282
1990-04-01	65.8270478236619
1990-07-01	64.7321249725940
1990-10-01	63.6266758107332
1991-01-01	63.7985771763580
1991-04-01	63.6778963266684
1991-07-01	63.8893993706145
1991-10-01	62.4810160258061
1992-01-01	61.9430205959693
1992-04-01	61.3369890158414
1992-07-01	61.1270263988192
1992-10-01	61.6414109462493
1993-01-01	60.3632547776852
1993-04-01	59.8954281933904
1993-07-01	61.2534504500146
1993-10-01	61.0928448809445
1994-01-01	62.5667117793565
1994-04-01	61.5295954491869
1994-07-01	62.3126175271931
1994-10-01	61.7598310388426
1995-01-01	61.2982120856348
1995-04-01	62.4742192261483
1995-07-01	63.6395340595162
1995-10-01	64.5640037867845
1996-01-01	63.5314881504449
1996-04-01	64.0191887817387
1996-07-01	64.9508331344529
1996-10-01	60.9624888809002
1997-01-01	63.7665464734672
1997-04-01	64.0364379512351
1997-07-01	63.6695026644572
1997-10-01	63.4535254500068
1998-01-01	62.6221083605614
1998-04-01	63.1155502250261
1998-07-01	62.6913555496313
1998-10-01	59.5408330411158
1999-01-01	59.5608317905179
1999-04-01	58.4702435794026
1999-07-01	59.4654732200837
1999-10-01	59.3545915837749
2000-01-01	59.5663871231787
2000-04-01	59.8329661503369
2000-07-01	58.7412968190000
2000-10-01	59.9265940385102
2001-01-01	58.0981180660465
2001-04-01	61.5307754572979
2001-07-01	59.1350445503635
2001-10-01	60.1276098171640
2002-01-01	61.0215528027746
2002-04-01	62.3367760083445
2002-07-01	60.1512232478321
2002-10-01	58.5457597433443
2003-01-01	59.5982448141949
2003-04-01	58.6353143135702
2003-07-01	60.2967738933001
2003-10-01	59.4942735000254
2004-01-01	59.1264920675618
2004-04-01	57.0090349825699
2004-07-01	57.6668656201037
2004-10-01	60.7805541034218
2005-01-01	57.5588977934335
2005-04-01	58.2651226472094
2005-07-01	60.3308554545802
2005-10-01	60.4570765859561
2006-01-01	62.5762212265025
2006-04-01	60.7715677120022
2006-07-01	61.4516842580017
2006-10-01	61.1365986393448
2007-01-01	62.6734103078910
2007-04-01	61.8584509140035
2007-07-01	61.1194111715758
2007-10-01	61.3343962993641
2008-01-01	58.7064897233798
2008-04-01	60.1536145185023
2008-07-01	59.5980718680236
2008-10-01	61.0602065487829
2009-01-01	58.0379622887068
2009-04-01	58.5757166799199
2009-07-01	58.8261843267453
2009-10-01	56.9086720370445
2010-01-01	57.2834752979135
2010-04-01	57.1414603522848
2010-07-01	57.9375256093514
2010-10-01	56.6908172229512
2011-01-01	56.4466460873801
2011-04-01	56.6254187420818
2011-07-01	56.3147613101602
2011-10-01	54.8603964153320
2012-01-01	56.4222730573341
2012-04-01	57.8363410241814
2012-07-01	56.7790561436072
2012-10-01	53.9558291853144
2013-01-01	55.4242935524564
2013-04-01	56.2768019007847
2013-07-01	56.0955598787930
2013-10-01	56.5955195094920
2014-01-01	56.9891709240199
2014-04-01	57.0941943682550
2014-07-01	56.5756925603389
2014-10-01	60.5823397866195
2015-01-01	59.5956597526054
2015-04-01	60.1400020391149
2015-07-01	59.1259326600939
2015-10-01	57.8176101562786
2016-01-01	60.0609742170900
2016-04-01	59.2309543522863
2016-07-01	58.8973005501046
2016-10-01	61.8027056137271
2017-01-01	60.8420184800580
2017-04-01	58.9133200292595
2017-07-01	62.0686063924564
2017-10-01	63.3924579375389
2018-01-01	63.6832527491947
2018-04-01	62.4366748224137
2018-07-01	63.7437093126146