Quarter	Percent, Seasonally Adjusted
1983-01-01	53.5191507764144
1983-04-01	54.2210791096398
1983-07-01	53.6168083496528
1983-10-01	53.5700456492672
1984-01-01	54.8977397126144
1984-04-01	54.8110274892019
1984-07-01	54.9405307722923
1984-10-01	54.7187971178054
1985-01-01	54.5452387389942
1985-04-01	53.9695425093878
1985-07-01	54.5386531188228
1985-10-01	55.2617173292104
1986-01-01	55.5421616708779
1986-04-01	55.5582138794755
1986-07-01	54.8918994427436
1986-10-01	54.6873042526944
1987-01-01	55.0761523645624
1987-04-01	55.0238426486998
1987-07-01	54.8927598545385
1987-10-01	54.1460151105804
1988-01-01	54.4124675469170
1988-04-01	54.8184630594280
1988-07-01	54.5631465356929
1988-10-01	54.7078232160608
1989-01-01	54.0833571431282
1989-04-01	54.1046848319499
1989-07-01	53.9778912166219
1989-10-01	53.3050128449457
1990-01-01	53.3007221235431
1990-04-01	52.5401508208457
1990-07-01	52.5155210281719
1990-10-01	52.3920429214595
1991-01-01	51.9560394408483
1991-04-01	51.2542194005912
1991-07-01	50.8541583304831
1991-10-01	51.3273518043194
1992-01-01	51.0298553764885
1992-04-01	52.0944468372223
1992-07-01	51.3941596761538
1992-10-01	50.9656771391648
1993-01-01	51.0498034653703
1993-04-01	51.1182460676954
1993-07-01	51.3634745811003
1993-10-01	51.5044646530312
1994-01-01	51.6326584991655
1994-04-01	51.6909615346484
1994-07-01	52.0241834787827
1994-10-01	52.0107927819419
1995-01-01	51.3246634831078
1995-04-01	51.1947464522235
1995-07-01	51.5248334608944
1995-10-01	51.7239318078225
1996-01-01	52.1160374653882
1996-04-01	51.2928342340321
1996-07-01	51.0119010940819
1996-10-01	50.7249458527046
1997-01-01	50.8175052824596
1997-04-01	50.6884240489839
1997-07-01	50.3862084869304
1997-10-01	50.0360806900043
1998-01-01	50.1074657853321
1998-04-01	50.1384411494932
1998-07-01	49.8688059467091
1998-10-01	50.1905805448763
1999-01-01	50.1764287855544
1999-04-01	49.8298964546454
1999-07-01	49.8426286193462
1999-10-01	50.1364697564067
2000-01-01	50.3636764186095
2000-04-01	50.2129995979347
2000-07-01	50.3145624081180
2000-10-01	50.2041141890714
2001-01-01	50.4521267962668
2001-04-01	50.9578529361072
2001-07-01	51.2170789322678
2001-10-01	51.0165043718121
2002-01-01	50.8380396994839
2002-04-01	51.3399582164580
2002-07-01	50.9588852619408
2002-10-01	51.1180932673592
2003-01-01	50.5423047091944
2003-04-01	50.8512114441462
2003-07-01	50.7145644944211
2003-10-01	50.1910269728052
2004-01-01	50.3675924632562
2004-04-01	49.8289376065655
2004-07-01	49.6427249669190
2004-10-01	49.5858296328280
2005-01-01	49.3944727890913
2005-04-01	49.2767166095328
2005-07-01	48.9120836959006
2005-10-01	49.2420123622464
2006-01-01	48.9338791750265
2006-04-01	48.6383841449610
2006-07-01	48.6514933793738
2006-10-01	47.8714718614567
2007-01-01	47.7693522877131
2007-04-01	47.8416290324113
2007-07-01	47.3131014985426
2007-10-01	46.7483878008750
2008-01-01	47.2113862192746
2008-04-01	46.3117924689202
2008-07-01	46.6367875061345
2008-10-01	46.8588219614459
2009-01-01	46.4882873228493
2009-04-01	46.4436779878114
2009-07-01	46.1401466106636
2009-10-01	46.3917393516000
2010-01-01	46.1143361038897
2010-04-01	46.2958530469127
2010-07-01	45.6608017430913
2010-10-01	45.7573082171509
2011-01-01	45.4851480985194
2011-04-01	45.1273714723514
2011-07-01	45.7428373749932
2011-10-01	45.5925329447254
2012-01-01	45.8124185495115
2012-04-01	46.1570494946150
2012-07-01	46.1148402187419
2012-10-01	45.5382039637708
2013-01-01	44.6259540591047
2013-04-01	44.7160127497451
2013-07-01	43.9590364658402
2013-10-01	43.3162176606918
2014-01-01	43.3950128442231
2014-04-01	42.2745634888468
2014-07-01	42.4095440576759
2014-10-01	41.8585074106740
2015-01-01	41.2899045075630
2015-04-01	40.9777779032074
2015-07-01	40.2909428600032
2015-10-01	39.9463950269585
2016-01-01	39.5426929694909
2016-04-01	39.3665646013969
2016-07-01	38.6197857824206
2016-10-01	38.2088817691724
2017-01-01	37.4001611020468
2017-04-01	36.9052756914442
2017-07-01	36.2768928848979
2017-10-01	35.9118098633566
2018-01-01	35.0540497869129
2018-04-01	34.5912741712631
2018-07-01	33.9096025058125