Quarter	Percent, Seasonally Adjusted
1978-01-01	17.3529976364978
1978-04-01	17.3643833249201
1978-07-01	17.5575560764643
1978-10-01	17.5461503645754
1979-01-01	17.6592284321139
1979-04-01	17.4416027882812
1979-07-01	17.4346885173311
1979-10-01	17.6049687341543
1980-01-01	17.8374934193662
1980-04-01	17.8809172781731
1980-07-01	17.7292568570530
1980-10-01	17.6176797387858
1981-01-01	17.4499227115045
1981-04-01	17.6917036918687
1981-07-01	17.8828240284395
1981-10-01	18.1192853078280
1982-01-01	17.9467854908155
1982-04-01	17.8776880251641
1982-07-01	18.1669389078203
1982-10-01	17.9015343717919
1983-01-01	17.7288940707524
1983-04-01	17.7256033306127
1983-07-01	17.9648411537799
1983-10-01	18.1227452892433
1984-01-01	18.1901728362886
1984-04-01	18.3289253259723
1984-07-01	18.4265490428516
1984-10-01	18.5051527157035
1985-01-01	18.7102423197840
1985-04-01	18.9423199286933
1985-07-01	19.0756568951793
1985-10-01	19.0912336649689
1986-01-01	19.2017854462808
1986-04-01	19.2443625108958
1986-07-01	19.1951241671800
1986-10-01	19.4275422593491
1987-01-01	19.5026016094105
1987-04-01	19.5601076190573
1987-07-01	19.4957332173565
1987-10-01	19.7128734700457
1988-01-01	19.7802090377920
1988-04-01	19.7357905581556
1988-07-01	19.7859404747855
1988-10-01	19.9458038122126
1989-01-01	19.9625937291127
1989-04-01	19.7795223675876
1989-07-01	19.8724208403109
1989-10-01	19.8074078176002
1990-01-01	19.8024992536380
1990-04-01	19.6372987929897
1990-07-01	19.6250042421267
1990-10-01	19.3407663810068
1991-01-01	19.2190784922366
1991-04-01	19.1906886475800
1991-07-01	19.1070632202540
1991-10-01	19.0724560213149
1992-01-01	18.7596955935149
1992-04-01	19.0322854412514
1992-07-01	18.9804030360757
1992-10-01	18.7262885255832
1993-01-01	18.8424100964702
1993-04-01	18.8453980540331
1993-07-01	18.8849061721137
1993-10-01	18.6841149212453
1994-01-01	18.9763078512030
1994-04-01	18.9985827502326
1994-07-01	18.9817158192185
1994-10-01	19.2147957591671
1995-01-01	19.2811834889688
1995-04-01	19.3030011760641
1995-07-01	18.9210813074828
1995-10-01	19.0944629969827
1996-01-01	19.1797075428355
1996-04-01	18.9772368373737
1996-07-01	18.7368401005529
1996-10-01	18.8252947400929
1997-01-01	18.6671929279136
1997-04-01	18.6430838812917
1997-07-01	18.9211517583361
1997-10-01	19.1032811798185
1998-01-01	19.1056018453338
1998-04-01	19.0444328677341
1998-07-01	19.2955042095371
1998-10-01	19.3252656390853
1999-01-01	19.2425492725126
1999-04-01	19.3478426294216
1999-07-01	19.4667721803162
1999-10-01	19.5126909463173
2000-01-01	19.6432547656382
2000-04-01	19.7952268006802
2000-07-01	19.8436024442264
2000-10-01	19.5969285449736
2001-01-01	19.9520712143639
2001-04-01	20.1129451938728
2001-07-01	20.3041264787751
2001-10-01	20.4837087558328
2002-01-01	20.6315272784242
2002-04-01	20.9050633003436
2002-07-01	20.7877782234696
2002-10-01	21.0464253582098
2003-01-01	21.0986661175342
2003-04-01	21.0555183606092
2003-07-01	21.3425516030847
2003-10-01	21.3482444430512
2004-01-01	21.5827765310616
2004-04-01	21.6483044377035
2004-07-01	21.6346000614635
2004-10-01	21.6684912283106
2005-01-01	21.6496742946817
2005-04-01	21.7440142612797
2005-07-01	21.5170123779474
2005-10-01	21.3923229792053
2006-01-01	21.4288521688021
2006-04-01	21.4279428082256
2006-07-01	21.3234596547048
2006-10-01	21.3119304150500
2007-01-01	21.1615963814769
2007-04-01	21.0389657355700
2007-07-01	21.1483236789225
2007-10-01	21.1456782981518
2008-01-01	21.1397011897005
2008-04-01	21.1324628884434
2008-07-01	21.2588360804374
2008-10-01	21.2539075137334
2009-01-01	21.4756476758376
2009-04-01	21.6363411154648
2009-07-01	21.7563818915429
2009-10-01	21.9223633207954
2010-01-01	21.7396066004116
2010-04-01	21.8709127172605
2010-07-01	21.8137990062584
2010-10-01	21.8397854669706
2011-01-01	21.7986220281737
2011-04-01	22.0763322940806
2011-07-01	22.2711838257951
2011-10-01	22.1840446803818
2012-01-01	22.2434034526473
2012-04-01	22.3080560643900
2012-07-01	22.3508881950881
2012-10-01	22.3322375203106
2013-01-01	22.2541425849738
2013-04-01	22.2204491733343
2013-07-01	22.1815339195943
2013-10-01	22.1976198137336
2014-01-01	22.1707684854791
2014-04-01	22.1416209094666
2014-07-01	22.1261216685546
2014-10-01	22.1397246294864
2015-01-01	22.0452729599815
2015-04-01	22.0771219756674
2015-07-01	21.9391025261085
2015-10-01	21.8089332287896
2016-01-01	21.6870120081600
2016-04-01	21.5489181625220
2016-07-01	21.4446235686523
2016-10-01	21.3267877148892
2017-01-01	21.3903699660688
2017-04-01	21.3607182733983
2017-07-01	21.2009803251293
2017-10-01	21.0550969353761
2018-01-01	20.8102462451497
2018-04-01	20.5668292021235
2018-07-01	20.4216645462060