Quarter	Percent, Seasonally Adjusted
1960-01-01	21.7974513749162
1960-04-01	22.3756906077348
1960-07-01	22.6238286479250
1960-10-01	22.7332457293035
1961-01-01	22.6607256524507
1961-04-01	22.7183191070256
1961-07-01	22.0457433290978
1961-10-01	22.8013029315961
1962-01-01	22.9219143576826
1962-04-01	21.9135802469136
1962-07-01	22.0560747663551
1962-10-01	22.6250000000000
1963-01-01	21.7780429594272
1963-04-01	21.2462908011869
1963-07-01	20.8765859284890
1963-10-01	21.3180515759312
1964-01-01	21.0409745293466
1964-04-01	21.0555250137438
1964-07-01	21.6880939072107
1964-10-01	21.9967087218870
1965-01-01	20.8488063660477
1965-04-01	21.5064935064935
1965-07-01	20.2980472764645
1965-10-01	20.6723532363271
1966-01-01	21.1595639246779
1966-04-01	22.1837944664032
1966-07-01	21.9020172910663
1966-10-01	21.7532467532468
1967-01-01	21.9467401285583
1967-04-01	22.4162340726758
1967-07-01	24.4186046511628
1967-10-01	26.8955650929900
1968-01-01	22.7144583165526
1968-04-01	23.6747708250299
1968-07-01	23.7415477084899
1968-10-01	24.0000000000000
1969-01-01	23.5442127965492
1969-04-01	22.6943005181347
1969-07-01	22.8762541806020
1969-10-01	23.0234866027125
1970-01-01	23.2952792348041
1970-04-01	23.5276073619632
1970-07-01	25.8374689826303
1970-10-01	24.5693306975431
1971-01-01	25.8779504893495
1971-04-01	24.5050829320492
1971-07-01	25.0198570293884
1971-10-01	25.6078224101480
1972-01-01	23.5111958075274
1972-04-01	22.6159944042900
1972-07-01	24.8651299656694
1972-10-01	22.8015075376884
1973-01-01	22.6579520697168
1973-04-01	22.2810218978102
1973-07-01	22.6929161539814
1973-10-01	22.9510825982358
1974-01-01	22.1107719145225
1974-04-01	21.5739118717154
1974-07-01	22.1446449743117
1974-10-01	22.0592020592021
1975-01-01	22.0755630903366
1975-04-01	22.3950795947902
1975-07-01	22.6561580990472
1975-10-01	22.3519239083441
1976-01-01	22.4919419822724
1976-04-01	22.2201750345463
1976-07-01	22.9724964739069
1976-10-01	22.7239502964347
1977-01-01	21.9947631516306
1977-04-01	21.8437783832879
1977-07-01	21.8412468285611
1977-10-01	22.1667645331767
1978-01-01	21.5486066794299
1978-04-01	20.4521134296415
1978-07-01	21.2770137524558
1978-10-01	20.7199242185033
1979-01-01	21.4651089359015
1979-04-01	18.7820786997434
1979-07-01	19.6175006549646
1979-10-01	19.3727747158952
1980-01-01	17.9777848882388
1980-04-01	17.3544174476969
1980-07-01	18.1709503885236
1980-10-01	18.0318314279310
1981-01-01	16.9099604907465
1981-04-01	16.6719292706031
1981-07-01	15.8773291925466
1981-10-01	15.0861359069798
1982-01-01	15.2716543444346
1982-04-01	15.2490624896293
1982-07-01	14.9892008639309
1982-10-01	14.9743918053777
1983-01-01	15.4404888085292
1983-04-01	16.4677334732424
1983-07-01	16.4248458985301
1983-10-01	16.1521719137979
1984-01-01	15.8282778438942
1984-04-01	15.9088325565534
1984-07-01	15.2494376075162
1984-10-01	14.9763775672566
1985-01-01	15.1694691645278
1985-04-01	15.7780646418394
1985-07-01	16.6805086945237
1985-10-01	17.2573148832788
1986-01-01	17.4835271572205
1986-04-01	17.5870169848514
1986-07-01	17.6633991292502
1986-10-01	17.6625748199249
1987-01-01	17.8777849133034
1987-04-01	18.5346119268804
1987-07-01	18.6374105952237
1987-10-01	18.5712864886369
1988-01-01	18.3670481442620
1988-04-01	17.6300374056038
1988-07-01	16.8992455097817
1988-10-01	17.6439944735114
1989-01-01	16.5531993665028
1989-04-01	16.4989700522897
1989-07-01	16.6429115332800
1989-10-01	15.7473080739407
1990-01-01	16.8354727472964
1990-04-01	16.5310384559988
1990-07-01	16.3150843976065
1990-10-01	16.0841367221735
1991-01-01	15.6068643856588
1991-04-01	16.1557694283659
1991-07-01	17.0324477580594
1991-10-01	17.5748909954280
1992-01-01	18.5185185185185
1992-04-01	18.6204182393875
1992-07-01	17.1179007647421
1992-10-01	18.5517033867139
1993-01-01	18.4566006574950
1993-04-01	18.4145000646747
1993-07-01	18.9273356401384
1993-10-01	19.7970253174394
1994-01-01	19.7884339937933
1994-04-01	18.8330156424919
1994-07-01	19.3852090405315
1994-10-01	19.7960221493954
1995-01-01	20.1097397299929
1995-04-01	18.7983092582595
1995-07-01	18.3847938375566
1995-10-01	18.7846864102942
1996-01-01	18.4990125082291
1996-04-01	19.4610742665950
1996-07-01	19.1121809621580
1996-10-01	20.0462957550534
1997-01-01	18.5705580425153
1997-04-01	18.6437567387764
1997-07-01	20.6055284480555
1997-10-01	19.0178054018430
1998-01-01	19.2269236013271
1998-04-01	19.3098276273478
1998-07-01	19.9288894870846
1998-10-01	20.9728456014363
1999-01-01	21.6767336236363
1999-04-01	21.6868566228744
1999-07-01	20.7171844853968
1999-10-01	21.3690029489795
2000-01-01	19.7954450245732
2000-04-01	19.8038431915454
2000-07-01	19.9596124310283
2000-10-01	19.6206428248076
2001-01-01	19.8119215234706
2001-04-01	21.0279082619508
2001-07-01	20.7446250655480
2001-10-01	21.5089967419614
2002-01-01	21.3600833260326
2002-04-01	21.4183640416897
2002-07-01	23.3283466207132
2002-10-01	23.5976047904192
2003-01-01	23.7370791023280
2003-04-01	24.7125202006520
2003-07-01	24.9077732626730
2003-10-01	24.0684515594811
2004-01-01	25.2627803680305
2004-04-01	25.6732287327512
2004-07-01	24.8115230322313
2004-10-01	24.4089984748348
2005-01-01	24.6564734700328
2005-04-01	23.6526024022174
2005-07-01	23.1729117986543
2005-10-01	23.1742840731927
2006-01-01	22.0090017367481
2006-04-01	20.6413073574202
2006-07-01	23.3755081363597
2006-10-01	23.0275329197954
2007-01-01	23.6280173927788
2007-04-01	22.3130344946335
2007-07-01	22.8919241569098
2007-10-01	22.5455734050648
2008-01-01	21.7302719643904
2008-04-01	22.2332546157149
2008-07-01	22.9710465781829
2008-10-01	26.3794911991516
2009-01-01	29.3634190077705
2009-04-01	30.1169285560262
2009-07-01	29.7072975412451
2009-10-01	28.2320423590529
2010-01-01	28.5965854041740
2010-04-01	28.3877119574423
2010-07-01	27.9334451374626
2010-10-01	27.7746019269475
2011-01-01	26.3327130035911
2011-04-01	27.3014272246947
2011-07-01	28.3214470341692
2011-10-01	27.6930089326908
2012-01-01	28.3961883271667
2012-04-01	29.1800782196380
2012-07-01	29.6340935959171
2012-10-01	31.1835947097493
2013-01-01	32.3142257811920
2013-04-01	31.4771976206213
2013-07-01	31.3329555114763
2013-10-01	31.8937953045229
2014-01-01	32.4161534803717
2014-04-01	33.1623813154065
2014-07-01	33.5762763461848
2014-10-01	33.9278230500582
2015-01-01	34.1609324205231
2015-04-01	33.5436745578741
2015-07-01	34.5993699989138
2015-10-01	36.3655212366985
2016-01-01	36.7464472249498
2016-04-01	35.6772056885507
2016-07-01	35.8646918426981
2016-10-01	36.4243899911931
2017-01-01	34.4086623348208
2017-04-01	34.0927121724896
2017-07-01	33.9562313142680
2017-10-01	35.4091889747782
2018-01-01	33.7463766408220
2018-04-01	33.6900205925773