Quarter	Percent, Seasonally Adjusted
1971-04-01	23.3502538071066
1971-07-01	22.7586206896552
1971-10-01	25.8064516129032
1972-01-01	26.2529832935561
1972-04-01	23.7250554323725
1972-07-01	24.2152466367713
1972-10-01	23.1075697211155
1973-01-01	24.0234375000000
1973-04-01	25.8490566037736
1973-07-01	23.0769230769231
1973-10-01	24.9163879598662
1974-01-01	23.0878186968838
1974-04-01	20.2863961813842
1974-07-01	20.0878155872667
1974-10-01	19.5876288659794
1975-01-01	20.9821428571429
1975-04-01	22.0930232558140
1975-07-01	22.0183486238532
1975-10-01	20.8661417322835
1976-01-01	20.7239819004525
1976-04-01	18.6005314437555
1976-07-01	19.9141630901288
1976-10-01	20.1687763713080
1977-01-01	21.0610932475884
1977-04-01	22.5731895223421
1977-07-01	21.1246200607903
1977-10-01	23.3629749393694
1978-01-01	23.3822260569456
1978-04-01	23.5340729001585
1978-07-01	23.9731142643764
1978-10-01	24.3628185907046
1979-01-01	25.0172294968987
1979-04-01	24.7672253258845
1979-07-01	24.9844236760125
1979-10-01	23.0854605993341
1980-01-01	21.7737917289487
1980-04-01	24.4709712425393
1980-07-01	23.9215686274510
1980-10-01	26.2163438828531
1981-01-01	25.0000000000000
1981-04-01	24.3322203672788
1981-07-01	24.4444444444444
1981-10-01	23.0101848359110
1982-01-01	23.3648255813953
1982-04-01	21.7005909389363
1982-07-01	24.5674740484429
1982-10-01	24.3389830508475
1983-01-01	28.0554542137906
1983-04-01	20.7271491675161
1983-07-01	22.9687500000000
1983-10-01	21.4220601640839
1984-01-01	21.7366628830874
1984-04-01	20.3753351206434
1984-07-01	19.9718375968083
1984-10-01	19.4847369560511
1985-01-01	19.0173283614828
1985-04-01	19.1185599006828
1985-07-01	19.8524625732263
1985-10-01	21.3210514491126
1986-01-01	20.5070074196208
1986-04-01	23.7740112994350
1986-07-01	22.2690847743568
1986-10-01	23.0610561056106
1987-01-01	23.1233648621453
1987-04-01	22.5831550282046
1987-07-01	21.6359356610435
1987-10-01	22.3126089482859
1988-01-01	24.9947927515101
1988-04-01	25.8569614896318
1988-07-01	25.8570234113712
1988-10-01	25.4336425978217
1989-01-01	24.7813411078717
1989-04-01	22.5211243317813
1989-07-01	25.3005750130685
1989-10-01	22.8049792531120
1990-01-01	23.8971244865155
1990-04-01	23.3236151603499
1990-07-01	23.1064851881505
1990-10-01	23.2043292882912
1991-01-01	23.9159001314060
1991-04-01	24.2945399899816
1991-07-01	24.7642679900744
1991-10-01	25.2172513678790
1992-01-01	24.7097073850441
1992-04-01	25.5273941417514
1992-07-01	24.7581354441513
1992-10-01	24.7129735935706
1993-01-01	25.0112191473448
1993-04-01	22.3842917251052
1993-07-01	21.8051226453449
1993-10-01	20.8610567514677
1994-01-01	21.5837043032510
1994-04-01	20.9424083769634
1994-07-01	21.7910072846019
1994-10-01	19.6976744186047
1995-01-01	20.2634593356243
1995-04-01	19.8824460269018
1995-07-01	20.3096330275229
1995-10-01	19.9123767798467
1996-01-01	20.2162877951887
1996-04-01	19.3551819536072
1996-07-01	19.5274040039383
1996-10-01	18.3923705722071
1997-01-01	19.2370217838951
1997-04-01	18.4264374872110
1997-07-01	20.1006100824146
1997-10-01	20.7148743304491
1998-01-01	20.0316957210777
1998-04-01	22.3082408067638
1998-07-01	21.6437814877013
1998-10-01	21.2911543038477
1999-01-01	20.6292697007601
1999-04-01	20.3918931898953
1999-07-01	19.4071735508200
1999-10-01	18.2233834095362
2000-01-01	19.2703615251585
2000-04-01	19.5791550221930
2000-07-01	19.9082858950032
2000-10-01	20.2660054102795
2001-01-01	21.1303381489125
2001-04-01	20.7043588123816
2001-07-01	19.6204492641363
2001-10-01	19.6410843833524
2002-01-01	18.7300007110858
2002-04-01	19.8176984428409
2002-07-01	19.2493856579045
2002-10-01	19.1028672775643
2003-01-01	18.8969678217822
2003-04-01	18.3468199349618
2003-07-01	19.5527741738533
2003-10-01	18.8409023449095
2004-01-01	18.8200419347842
2004-04-01	18.4072227462606
2004-07-01	18.7633404482391
2004-10-01	18.6915276414786
2005-01-01	18.8583861265758
2005-04-01	18.8361119849009
2005-07-01	18.2122225600486
2005-10-01	18.2979764015406
2006-01-01	18.0989889489772
2006-04-01	18.0192572214580
2006-07-01	17.7446569178853
2006-10-01	17.5573387968812
2007-01-01	17.5426849681955
2007-04-01	17.7108700464910
2007-07-01	17.6115737774931
2007-10-01	17.2859038481168
2008-01-01	17.3208879919273
2008-04-01	17.5987228248110
2008-07-01	17.3096588268104
2008-10-01	18.4810248044907
2009-01-01	19.7113842864778
2009-04-01	21.0254518627813
2009-07-01	21.6300330674966
2009-10-01	19.0361445783133
2010-01-01	20.2251163887088
2010-04-01	19.5784148397976
2010-07-01	19.9798747763864
2010-10-01	19.2989798587497
2011-01-01	19.8334555357704
2011-04-01	19.6502998881773
2011-07-01	19.5971996753247
2011-10-01	19.1661637497485
2012-01-01	19.2240036186360
2012-04-01	18.9198571711962
2012-07-01	19.5206350821841
2012-10-01	19.7232367920160
2013-01-01	19.1768916155419
2013-04-01	19.4953546225313
2013-07-01	19.1326778935073
2013-10-01	19.1178632688067
2014-01-01	18.9861171576452
2014-04-01	18.6124650986702
2014-07-01	18.8061127029608
2014-10-01	18.9171739531452
2015-01-01	19.4688189198067
2015-04-01	19.0297825689750
2015-07-01	19.1179762704276
2015-10-01	19.6391776180228
2016-01-01	20.2391038313094
2016-04-01	19.8007585797194
2016-07-01	19.7720378711279
2016-10-01	19.8879294506706
2017-01-01	19.6292163762767
2017-04-01	19.1159803551190
2017-07-01	19.6461230913190
2017-10-01	18.5221752695391
2018-01-01	18.9415594727648
2018-04-01	18.8009647410130