Quarter	Percent, Seasonally Adjusted
1978-04-01	52.7029039516660
1978-07-01	53.4970862590806
1978-10-01	54.4281484442706
1979-01-01	54.7215361290752
1979-04-01	55.0785427940454
1979-07-01	55.2617349966303
1979-10-01	55.4335979828556
1980-01-01	55.3221341181350
1980-04-01	54.8862212762905
1980-07-01	54.7358005085618
1980-10-01	55.5372687905696
1981-01-01	56.1170301205714
1981-04-01	56.4390071844830
1981-07-01	55.6203800166956
1981-10-01	56.2365676783484
1982-01-01	56.7811752309419
1982-04-01	57.7188102866617
1982-07-01	58.2539571151150
1982-10-01	57.6698604780521
1983-01-01	57.8124642004679
1983-04-01	58.5689152877295
1983-07-01	58.5621028469629
1983-10-01	58.9020433121447
1984-01-01	58.3866880409847
1984-04-01	58.5235451223420
1984-07-01	58.9993308237559
1984-10-01	59.1323861696972
1985-01-01	59.3393595577142
1985-04-01	60.0296440474778
1985-07-01	59.4126653510269
1985-10-01	58.5567772668033
1986-01-01	58.5045794829014
1986-04-01	58.1198674731882
1986-07-01	58.6915954986603
1986-10-01	58.1357015687164
1987-01-01	57.8719979815663
1987-04-01	57.9210385679599
1987-07-01	58.5852288429567
1987-10-01	58.4081552764509
1988-01-01	57.7833155148209
1988-04-01	57.5670934230578
1988-07-01	57.8132761697746
1988-10-01	57.7941884827076
1989-01-01	57.0422336232645
1989-04-01	56.6648875517651
1989-07-01	56.7609529074902
1989-10-01	56.8224611469157
1990-01-01	57.4319755138483
1990-04-01	56.5534126034520
1990-07-01	55.2825076362335
1990-10-01	55.1307573283414
1991-01-01	55.9100237886554
1991-04-01	56.2965777688166
1991-07-01	56.9986763261050
1991-10-01	56.3304373617278
1992-01-01	56.3083179416985
1992-04-01	56.5579114683907
1992-07-01	56.2871870852267
1992-10-01	56.9524586590111
1993-01-01	57.0034373047612
1993-04-01	57.1482307665796
1993-07-01	56.7800353232021
1993-10-01	55.7181208318789
1994-01-01	55.3409228339258
1994-04-01	55.2726755584680
1994-07-01	55.4757206596916
1994-10-01	55.4722071173894
1995-01-01	55.4096739389968
1995-04-01	55.0800910452847
1995-07-01	54.9861503964534
1995-10-01	54.3481004879126
1996-01-01	54.1049782124515
1996-04-01	54.4042901774985
1996-07-01	54.1918036389245
1996-10-01	54.2782638636678
1997-01-01	53.8476689013984
1997-04-01	54.3156553221852
1997-07-01	54.3443636643332
1997-10-01	54.2192809523660
1998-01-01	54.1093548370247
1998-04-01	53.2463299706203
1998-07-01	52.9469122092876
1998-10-01	53.4948687788685
1999-01-01	53.8937190426384
1999-04-01	54.0665150583605
1999-07-01	53.1119595946921
1999-10-01	52.5800080542091
2000-01-01	52.3351139106305
2000-04-01	51.7755058593463
2000-07-01	51.2730621410580
2000-10-01	51.6550035651701
2001-01-01	51.8652566927762
2001-04-01	50.9570520212744
2001-07-01	51.0417809389579
2001-10-01	50.2889168190975
2002-01-01	49.3815864248737
2002-04-01	49.4850326801749
2002-07-01	49.7746139340762
2002-10-01	48.7769182856652
2003-01-01	47.8886490898635
2003-04-01	47.7935464475284
2003-07-01	47.7437329301360
2003-10-01	47.5521080426200
2004-01-01	47.4264065990162
2004-04-01	46.5321851054050
2004-07-01	45.8141582677679
2004-10-01	45.8178436825390
2005-01-01	45.4272540581232
2005-04-01	44.9734049294055
2005-07-01	44.3873987848208
2005-10-01	43.8610797752941
2006-01-01	43.3853923669910
2006-04-01	43.0257674556043
2006-07-01	42.1848239206422
2006-10-01	42.3422626708203
2007-01-01	42.1385562596928
2007-04-01	41.7475745223106
2007-07-01	41.7981584107799
2007-10-01	41.9217471697070
2008-01-01	42.0924456996096
2008-04-01	41.2067027859594
2008-07-01	40.6624353726896
2008-10-01	40.6412386268256
2009-01-01	39.2143408719783
2009-04-01	39.0909473484745
2009-07-01	39.1818232815526
2009-10-01	38.2876812344140
2010-01-01	37.7653508409741
2010-04-01	37.8465653021003
2010-07-01	37.1512862584262
2010-10-01	36.6704919919797
2011-01-01	36.8200597979890
2011-04-01	36.8538384038982
2011-07-01	36.5112574627878
2011-10-01	36.7584194840273
2012-01-01	36.7828309084411
2012-04-01	36.4931405975732
2012-07-01	36.1444843005155
2012-10-01	36.0676726265563
2013-01-01	36.0091024659076
2013-04-01	35.8538465156719
2013-07-01	36.2777885685036
2013-10-01	36.4913412102907
2014-01-01	36.2840613897446
2014-04-01	36.0558031146758
2014-07-01	35.5644046716681
2014-10-01	35.9474350605861
2015-01-01	35.6672370838642
2015-04-01	35.3461964066508
2015-07-01	35.3099331402826
2015-10-01	34.1852357292942
2016-01-01	34.0215611812620
2016-04-01	34.6481017836307
2016-07-01	35.4558267851338
2016-10-01	34.9068487426679
2017-01-01	34.4641542314881
2017-04-01	33.6479176733311
2017-07-01	33.5570067565148
2017-10-01	33.2003551905005
2018-01-01	33.2923298515307
2018-04-01	33.6947414300383
2018-07-01	33.2286834945827