Quarter	Percent, Seasonally Adjusted
1971-04-01	14.6408839779006
1971-07-01	14.3884892086331
1971-10-01	16.0857908847185
1972-01-01	15.3846153846154
1972-04-01	14.3820224719101
1972-07-01	15.2654867256637
1972-10-01	15.1982378854626
1973-01-01	13.6915077989601
1973-04-01	15.0709219858156
1973-07-01	14.9549549549550
1973-10-01	15.8964879852126
1974-01-01	16.9741697416974
1974-04-01	19.3116634799235
1974-07-01	19.5933456561922
1974-10-01	20.4753199268739
1975-01-01	25.0000000000000
1975-04-01	22.7356746765250
1975-07-01	22.5490196078431
1975-10-01	20.5093833780161
1976-01-01	20.4545454545455
1976-04-01	17.6403207331042
1976-07-01	17.9627601314348
1976-10-01	18.4486373165618
1977-01-01	18.4024266936299
1977-04-01	17.5023651844844
1977-07-01	18.8059701492537
1977-10-01	18.9161554192229
1978-01-01	17.8055822906641
1978-04-01	19.4674012855831
1978-07-01	19.2411924119241
1978-10-01	18.9099917423617
1979-01-01	18.7121212121212
1979-04-01	18.4988627748294
1979-07-01	17.6256372906045
1979-10-01	15.7730673316708
1980-01-01	16.1073825503356
1980-04-01	17.1410499683744
1980-07-01	17.6744186046512
1980-10-01	17.6142697881828
1981-01-01	17.7777777777778
1981-04-01	18.6474390850323
1981-07-01	19.0667335674862
1981-10-01	19.1183517010062
1982-01-01	19.4736842105263
1982-04-01	19.2732290708372
1982-07-01	19.4344703770198
1982-10-01	20.3144921376966
1983-01-01	20.4592045920459
1983-04-01	20.7341670028237
1983-07-01	22.3396226415094
1983-10-01	21.5550423402617
1984-01-01	21.3745951781216
1984-04-01	22.9437229437229
1984-07-01	25.6728152403992
1984-10-01	21.8905472636816
1985-01-01	19.8796756473973
1985-04-01	22.7380015735641
1985-07-01	22.0050977060323
1985-10-01	24.5819888530361
1986-01-01	25.9647023631469
1986-04-01	24.7314867156586
1986-07-01	22.4382946896036
1986-10-01	25.9629814907454
1987-01-01	27.1576227390181
1987-04-01	24.0286054827175
1987-07-01	25.1188212927757
1987-10-01	25.8163748225272
1988-01-01	25.1993620414673
1988-04-01	25.8548009367682
1988-07-01	24.1638981173865
1988-10-01	22.4780242779406
1989-01-01	22.7704376548307
1989-04-01	21.0187235755990
1989-07-01	24.8216216216216
1989-10-01	23.9763699327765
1990-01-01	22.7191413237925
1990-04-01	23.5681500698463
1990-07-01	22.6912405866032
1990-10-01	22.7060653188180
1991-01-01	22.8687415426252
1991-04-01	22.9969765684051
1991-07-01	23.3597692862293
1991-10-01	22.1988795518207
1992-01-01	23.6701178150660
1992-04-01	22.5395789130080
1992-07-01	23.6780844695710
1992-10-01	22.5136974929437
1993-01-01	23.4069804674992
1993-04-01	22.5861533685191
1993-07-01	22.4556489262372
1993-10-01	24.8572335025381
1994-01-01	25.3313253012048
1994-04-01	24.7671711292200
1994-07-01	26.6256590509666
1994-10-01	25.8929852245015
1995-01-01	24.9826219936049
1995-04-01	28.3385313297420
1995-07-01	28.3276450511945
1995-10-01	29.0322580645161
1996-01-01	28.7215909090909
1996-04-01	27.6901987662783
1996-07-01	27.3797976998753
1996-10-01	27.6888827048838
1997-01-01	27.4061286145878
1997-04-01	25.6175409381071
1997-07-01	26.2929867316545
1997-10-01	26.6251820468688
1998-01-01	25.9525712763123
1998-04-01	28.0594996619337
1998-07-01	26.9531735188175
1998-10-01	26.7342648695437
1999-01-01	29.4242009700286
1999-04-01	29.8371828852707
1999-07-01	28.5086705202312
1999-10-01	29.8425812213911
2000-01-01	29.4597457627119
2000-04-01	28.4471148865638
2000-07-01	26.9454123112660
2000-10-01	27.1928297946398
2001-01-01	28.0566622399292
2001-04-01	27.2608468374281
2001-07-01	27.2363731200556
2001-10-01	27.6975821003248
2002-01-01	30.1169080439714
2002-04-01	29.8970885741930
2002-07-01	31.0901988636364
2002-10-01	32.7839159572541
2003-01-01	31.4986984008925
2003-04-01	32.3749172420316
2003-07-01	33.0981993688509
2003-10-01	33.2774518021794
2004-01-01	31.8378768730818
2004-04-01	32.0140280561122
2004-07-01	32.6273095989184
2004-10-01	31.0271420968600
2005-01-01	31.3227513227513
2005-04-01	30.9624911535740
2005-07-01	33.1602181251623
2005-10-01	30.9656130600903
2006-01-01	31.5209969272789
2006-04-01	30.1357966208748
2006-07-01	28.6218809980806
2006-10-01	31.2234255916566
2007-01-01	30.7825131465348
2007-04-01	31.0199538914063
2007-07-01	30.8934997320266
2007-10-01	27.6005259879576
2008-01-01	27.9669762641899
2008-04-01	28.7823378030611
2008-07-01	26.4080591352129
2008-10-01	26.2437651873641
2009-01-01	28.0664451827243
2009-04-01	27.8997087861354
2009-07-01	29.5944096246668
2009-10-01	29.7920095765375
2010-01-01	26.9584456889995
2010-04-01	26.5928159412690
2010-07-01	26.9409731454400
2010-10-01	26.5288769703709
2011-01-01	25.7324280145857
2011-04-01	24.5046355208144
2011-07-01	26.5907526747169
2011-10-01	26.7011300793460
2012-01-01	25.6882500160431
2012-04-01	25.9049417689644
2012-07-01	25.8578354215199
2012-10-01	26.0512954042442
2013-01-01	25.7520597815674
2013-04-01	26.8815814975128
2013-07-01	25.8400926998841
2013-10-01	23.3365920984530
2014-01-01	23.5993494475913
2014-04-01	25.4097868507956
2014-07-01	26.2837673399854
2014-10-01	28.5074453234062
2015-01-01	29.0270488494146
2015-04-01	30.5414994474495
2015-07-01	30.2616547897514
2015-10-01	31.0611664295875
2016-01-01	31.8853712408676
2016-04-01	31.0313901345292
2016-07-01	31.5624286692536
2016-10-01	32.1092598889267
2017-01-01	31.3499014670462
2017-04-01	30.3899735874463
2017-07-01	30.3436801331046
2017-10-01	29.3597366222790
2018-01-01	31.1077158135982
2018-04-01	30.9840038778478