Quarter	Percent, Seasonally Adjusted
1962-01-01	0.419824292606300
1962-04-01	0.402217560325880
1962-07-01	0.401031098939309
1962-10-01	0.406557357216848
1963-01-01	0.413735178011600
1963-04-01	0.434278844809813
1963-07-01	0.441584660753125
1963-10-01	0.438985046521137
1964-01-01	0.453218615391237
1964-04-01	0.442718598865938
1964-07-01	0.415828455794716
1964-10-01	0.395003142694426
1965-01-01	0.363397200679000
1965-04-01	0.326933369234272
1965-07-01	0.317293396575715
1965-10-01	0.296823226181689
1966-01-01	0.295937450232958
1966-04-01	0.290626170989297
1966-07-01	0.338198173955178
1966-10-01	0.498595612477241
1967-01-01	0.755071981714004
1967-04-01	1.053324618108620
1967-07-01	1.181050275606890
1967-10-01	1.064277253534080
1968-01-01	0.880980700473283
1968-04-01	0.782849185358243
1968-07-01	0.660571885003083
1968-10-01	0.555491166549852
1969-01-01	0.486410736323804
1969-04-01	0.432507034704435
1969-07-01	0.418764186220193
1969-10-01	0.416006604640125
1970-01-01	0.412668447935717
1970-04-01	0.423063761387166
1970-07-01	0.456033079270082
1970-10-01	0.506509775308246
1971-01-01	0.580289680654650
1971-04-01	0.650032146083127
1971-07-01	0.704616078569446
1971-10-01	0.755598689674887
1972-01-01	0.798868768373694
1972-04-01	0.833782909618003
1972-07-01	0.842177840402078
1972-10-01	0.847126577498995
1973-01-01	0.825752052061227
1973-04-01	0.867000553513854
1973-07-01	0.961516268935692
1973-10-01	1.168482535109140
1974-01-01	1.494836599258640
1974-04-01	1.777310515476060
1974-07-01	2.104921111253340
1974-10-01	2.552877152628290
1975-01-01	2.912516147763620
1975-04-01	3.419548182270980
1975-07-01	3.806249529286930
1975-10-01	3.889436056034800
1976-01-01	3.872641206801120
1976-04-01	3.836361229086690
1976-07-01	3.841230651888790
1976-10-01	3.861524359481140
1977-01-01	3.891623113656950
1977-04-01	4.037384606951350
1977-07-01	4.084135010093140
1977-10-01	4.014187695566030
1978-01-01	3.980521983874910
1978-04-01	3.958367153193350
1978-07-01	3.914199784500700
1978-10-01	3.869483336116670
1979-01-01	3.725472639375290
1979-04-01	3.610679881129100
1979-07-01	3.486617320993060
1979-10-01	3.351607445552500
1980-01-01	3.364179824217350
1980-04-01	3.360057084841250
1980-07-01	3.544829959704720
1980-10-01	3.756866946383550
1981-01-01	4.055508071807200
1981-04-01	4.452635349841270
1981-07-01	4.866750501347740
1981-10-01	5.238603890714420
1982-01-01	5.576850567572230
1982-04-01	5.866359093623030
1982-07-01	6.162740428220500
1982-10-01	6.688805075893770
1983-01-01	7.061034482897700
1983-04-01	7.403786079952680
1983-07-01	7.514986034598240
1983-10-01	7.424569612314400
1984-01-01	7.374317474264150
1984-04-01	7.301476756812460
1984-07-01	7.302394877273800
1984-10-01	7.352239848588510
1985-01-01	7.315912626303300
1985-04-01	7.422025000386040
1985-07-01	7.481233728900820
1985-10-01	7.563958825546760
1986-01-01	7.525628399428030
1986-04-01	7.506197720194950
1986-07-01	7.386157236451220
1986-10-01	7.262515742684200
1987-01-01	7.166407862908450
1987-04-01	7.244796023101470
1987-07-01	7.309257595958710
1987-10-01	7.381666149490100
1988-01-01	7.162568994081400
1988-04-01	7.126366259338310
1988-07-01	7.038682271541140
1988-10-01	6.890893974981250
1989-01-01	6.694981460067330
1989-04-01	6.567428608304920
1989-07-01	6.379463320306230
1989-10-01	6.446209524425220
1990-01-01	6.051977193619940
1990-04-01	5.911222821557810
1990-07-01	5.573048907874970
1990-10-01	5.279367316655060
1991-01-01	6.474057760917140
1991-04-01	6.677456558295060
1991-07-01	7.382750422519070
1991-10-01	7.607477884198750
1992-01-01	8.097004591412510
1992-04-01	8.168786593866470
1992-07-01	8.392542626373710
1992-10-01	8.797065930978340
1993-01-01	8.968304865932140
1993-04-01	9.446260092042860
1993-07-01	9.821482659708350
1993-10-01	10.129661067759000
1994-01-01	10.310754730857700
1994-04-01	10.278634780946200
1994-07-01	9.986858528025160
1994-10-01	9.634036326814190
1995-01-01	9.451821812861990
1995-04-01	9.426333334687600
1995-07-01	9.394571461260010
1995-10-01	9.466208862881800
1996-01-01	9.532590139805360
1996-04-01	9.373005941695620
1996-07-01	9.650978477794800
1996-10-01	9.951022303614810
1997-01-01	10.307856093500300
1997-04-01	10.635910098299300
1997-07-01	10.759357013042400
1997-10-01	10.729472942204100
1998-01-01	10.508553609965100
1998-04-01	9.900410101595420
1998-07-01	9.580943002988980
1998-10-01	9.372990951647470
1999-01-01	8.970732880918130
1999-04-01	9.053617068857300
1999-07-01	8.861882415949640
1999-10-01	8.595891038951500
2000-01-01	8.425513645170970
2000-04-01	8.161828902393340
2000-07-01	7.948394776009920
2000-10-01	7.773412928796420
2001-01-01	7.812712622114090
2001-04-01	7.848680955077210
2001-07-01	7.974540252327750
2001-10-01	8.126657889697240
2002-01-01	8.131722712532690
2002-04-01	8.301797615461220
2002-07-01	8.524425651157820
2002-10-01	8.772721308494350
2003-01-01	9.055301591569130
2003-04-01	9.251476196919980
2003-07-01	9.275057386242470
2003-10-01	9.240196923954450
2004-01-01	9.167769188053500
2004-04-01	9.166793481460840
2004-07-01	9.380119089657280
2004-10-01	9.481205849044490
2005-01-01	10.503047320187100
2005-04-01	11.011737579450400
2005-07-01	11.057533008913000
2005-10-01	10.980239338309100
2006-01-01	10.650099307965700
2006-04-01	10.151496151295400
2006-07-01	9.917648313974680
2006-10-01	9.977135628547510
2007-01-01	9.121343064250160
2007-04-01	8.932143186732650
2007-07-01	8.611744965181930
2007-10-01	8.517836540596360
2008-01-01	8.002969416525160
2008-04-01	7.975547766102100
2008-07-01	7.515216630809870
2008-10-01	7.107328282518980
2009-01-01	7.426933723240620
2009-04-01	7.360851328187870
2009-07-01	7.494010833217390
2009-10-01	6.967564867164620
2010-01-01	6.940499104856780
2010-04-01	6.582244462737170
2010-07-01	6.227108074910510
2010-10-01	6.238683547043640
2011-01-01	5.914877563188770
2011-04-01	5.573263523764820
2011-07-01	5.568319591806480
2011-10-01	5.273317935980720
2012-01-01	5.237114809229170
2012-04-01	5.242207107107810
2012-07-01	5.121696943545880
2012-10-01	5.109670407363680
2013-01-01	5.027184358480450
2013-04-01	5.005405696841250
2013-07-01	4.800209377052470
2013-10-01	4.829983057100250
2014-01-01	4.779034780906590
2014-04-01	4.607365854478490
2014-07-01	4.599485207738050
2014-10-01	4.537883420738560
2015-01-01	4.339503436175160
2015-04-01	4.316894536104730
2015-07-01	3.944406658769360
2015-10-01	4.281504190834560
2016-01-01	4.079649899405500
2016-04-01	3.897088163126970
2016-07-01	3.629533550736410
2016-10-01	3.358156996717880
2017-01-01	3.497383436692100
2017-04-01	3.327319790358440
2017-07-01	3.243384098839030
2017-10-01	3.190327608167260
2018-01-01	3.002228569950940
2018-04-01	3.063203625823860