Quarter	Percent, Seasonally Adjusted
1981-01-01	43.2994809881577
1981-04-01	42.8236129030896
1981-07-01	42.6694986228716
1981-10-01	41.7604182742702
1982-01-01	41.6295390264076
1982-04-01	41.9473164254182
1982-07-01	42.0171757059248
1982-10-01	41.0718953881435
1983-01-01	40.3057781155375
1983-04-01	40.3868694853977
1983-07-01	39.9006490667379
1983-10-01	40.1926740166725
1984-01-01	40.2391294590676
1984-04-01	39.8534580826668
1984-07-01	39.4492115572246
1984-10-01	39.1285760547598
1985-01-01	39.4404467480399
1985-04-01	39.4265068608610
1985-07-01	38.9453682973784
1985-10-01	39.1669878697051
1986-01-01	38.8379733352265
1986-04-01	38.7635629567453
1986-07-01	38.6644370791328
1986-10-01	38.8642151395832
1987-01-01	38.6840252298054
1987-04-01	38.1193996458512
1987-07-01	38.1585823050149
1987-10-01	37.9797775932071
1988-01-01	37.7355918459062
1988-04-01	37.3236036989328
1988-07-01	37.2344721793714
1988-10-01	37.3846091845258
1989-01-01	36.8920577665646
1989-04-01	36.2931488722456
1989-07-01	36.2470654747667
1989-10-01	36.0445910263828
1990-01-01	35.2598743121156
1990-04-01	35.5809009996944
1990-07-01	35.4637145582365
1990-10-01	35.4741621789281
1991-01-01	34.7096151375086
1991-04-01	35.0347948193429
1991-07-01	34.6089820021970
1991-10-01	34.2352965223446
1992-01-01	34.5169872741914
1992-04-01	34.6516155326470
1992-07-01	34.6711848079507
1992-10-01	33.8050112222915
1993-01-01	35.0165113440779
1993-04-01	34.8573740259459
1993-07-01	34.8218744903395
1993-10-01	34.2443969926651
1994-01-01	34.7040382531346
1994-04-01	34.1668868253118
1994-07-01	34.8743672712657
1994-10-01	34.8776091171829
1995-01-01	34.7124247401321
1995-04-01	34.6076792159293
1995-07-01	34.5932731737889
1995-10-01	34.9044225860965
1996-01-01	34.2992545463017
1996-04-01	34.3131951040333
1996-07-01	34.0481920365870
1996-10-01	34.0418165756950
1997-01-01	33.3332400688148
1997-04-01	33.2904262896518
1997-07-01	33.1316931118211
1997-10-01	33.2326055224370
1998-01-01	33.0945522372216
1998-04-01	33.4127398551934
1998-07-01	33.2555349863577
1998-10-01	33.5043515381175
1999-01-01	33.6410870878035
1999-04-01	33.5883283763434
1999-07-01	33.2260060586898
1999-10-01	33.4402633333916
2000-01-01	33.8395044647122
2000-04-01	33.1389340522652
2000-07-01	33.3942784211577
2000-10-01	33.3691234999740
2001-01-01	32.5048127003508
2001-04-01	32.8796856031805
2001-07-01	32.9589374666375
2001-10-01	32.4137913586760
2002-01-01	32.5871892320836
2002-04-01	33.0391838238928
2002-07-01	32.6840044081797
2002-10-01	31.9732298318932
2003-01-01	32.4713755171349
2003-04-01	32.0660503499103
2003-07-01	32.2686516964497
2003-10-01	31.9401953582792
2004-01-01	31.7929406704251
2004-04-01	32.0446136264248
2004-07-01	31.5293149500288
2004-10-01	31.9581405198081
2005-01-01	31.4314716628152
2005-04-01	31.0762792673299
2005-07-01	30.9138925854352
2005-10-01	31.2024767724487
2006-01-01	30.8515239393735
2006-04-01	30.6102907688969
2006-07-01	30.3689976705914
2006-10-01	30.5171086924680
2007-01-01	30.3570212628971
2007-04-01	29.5135077456543
2007-07-01	30.0988897956358
2007-10-01	29.4040810746476
2008-01-01	29.6522465476208
2008-04-01	29.6743717333593
2008-07-01	29.5915964464492
2008-10-01	29.0007275641886
2009-01-01	28.6927962590838
2009-04-01	29.1958611241566
2009-07-01	28.3390841524762
2009-10-01	28.3304945382032
2010-01-01	28.3503040789557
2010-04-01	28.5034781467440
2010-07-01	28.0141421395310
2010-10-01	28.1893022344733
2011-01-01	27.8284416055579
2011-04-01	27.6449454336746
2011-07-01	27.7566159659294
2011-10-01	27.9217824069176
2012-01-01	28.1114273521177
2012-04-01	27.4878168939690
2012-07-01	27.8960636629743
2012-10-01	27.5783509355911
2013-01-01	26.6711209352124
2013-04-01	26.2772698641056
2013-07-01	26.3932648766155
2013-10-01	25.6866540015687
2014-01-01	25.7362374399525
2014-04-01	25.6363755121271
2014-07-01	25.2417107399558
2014-10-01	24.7436875841802
2015-01-01	24.8175439215804
2015-04-01	24.9339298057225
2015-07-01	24.4444642509864
2015-10-01	24.4779625569237
2016-01-01	24.0214166378848
2016-04-01	23.9120629546429
2016-07-01	23.4295209916851
2016-10-01	23.2611859682403
2017-01-01	23.1408983329143
2017-04-01	22.5836386644943
2017-07-01	22.4487462404593
2017-10-01	21.8369194151230
2018-01-01	21.3559644350414
2018-04-01	21.1812958667989
2018-07-01	20.7900502710793