Quarter	Percent, Seasonally Adjusted
1978-04-01	31.0773362403137
1978-07-01	31.3265638736786
1978-10-01	31.3686826036647
1979-01-01	31.3531422859296
1979-04-01	31.4183564270776
1979-07-01	31.4078240170257
1979-10-01	30.9911612511826
1980-01-01	30.8216351671203
1980-04-01	30.5681883380045
1980-07-01	30.3014486367663
1980-10-01	30.5196281952740
1981-01-01	30.6533606945912
1981-04-01	30.6248866090652
1981-07-01	30.4359264686057
1981-10-01	30.6928377272985
1982-01-01	30.6158174186677
1982-04-01	30.9264074193481
1982-07-01	31.0428927613871
1982-10-01	30.7778091718316
1983-01-01	31.0794438996294
1983-04-01	31.2432617086556
1983-07-01	31.0926493850022
1983-10-01	31.1736502109349
1984-01-01	31.0492623810361
1984-04-01	30.7586114946986
1984-07-01	30.9043028115575
1984-10-01	30.9937607591827
1985-01-01	30.7831561486946
1985-04-01	30.8182411983640
1985-07-01	30.3732130632714
1985-10-01	30.0006347318311
1986-01-01	29.5125018417520
1986-04-01	29.0165971480304
1986-07-01	28.9865581993338
1986-10-01	28.8499539485963
1987-01-01	28.9181420947352
1987-04-01	28.8725135100035
1987-07-01	28.8783600316664
1987-10-01	28.9010801927259
1988-01-01	28.4563432077288
1988-04-01	28.1732221305644
1988-07-01	28.4526839919260
1988-10-01	28.1387111226093
1989-01-01	27.7861078726858
1989-04-01	27.3615685566850
1989-07-01	27.0748523304096
1989-10-01	26.8865987754946
1990-01-01	26.8224043849212
1990-04-01	26.4531593872037
1990-07-01	26.2564896464415
1990-10-01	26.4340839121037
1991-01-01	26.7819208611643
1991-04-01	26.7316404836988
1991-07-01	27.2380995227452
1991-10-01	27.3341100627484
1992-01-01	27.1232809506723
1992-04-01	27.2297299052667
1992-07-01	27.0543347511550
1992-10-01	27.3184262355304
1993-01-01	27.3745991550248
1993-04-01	27.7355598904212
1993-07-01	27.5388633173465
1993-10-01	26.9793221189684
1994-01-01	26.9241395254601
1994-04-01	27.0181200679961
1994-07-01	26.6297022378376
1994-10-01	26.6885417037665
1995-01-01	26.3866516092466
1995-04-01	26.0756400675134
1995-07-01	25.9448127599224
1995-10-01	25.7592860810866
1996-01-01	25.8269736000082
1996-04-01	26.0026205223789
1996-07-01	25.9470466413294
1996-10-01	26.0932468513057
1997-01-01	26.0564717624651
1997-04-01	26.4074020849834
1997-07-01	26.6225052310544
1997-10-01	26.5715292870390
1998-01-01	26.6257135331206
1998-04-01	26.4961764193603
1998-07-01	26.3325891423597
1998-10-01	26.4891977108021
1999-01-01	26.7496407116367
1999-04-01	26.8132327034670
1999-07-01	26.6505982724954
1999-10-01	26.4577661821066
2000-01-01	26.5404738820049
2000-04-01	26.1572200422177
2000-07-01	25.8458116524980
2000-10-01	26.3030748824718
2001-01-01	26.3603684224447
2001-04-01	25.7002049809408
2001-07-01	25.8534080630930
2001-10-01	25.8422553462600
2002-01-01	25.8772269924128
2002-04-01	26.0931895924536
2002-07-01	25.8782451743101
2002-10-01	25.5903362105622
2003-01-01	25.1810374650291
2003-04-01	25.5476206506238
2003-07-01	25.7140910927510
2003-10-01	25.6259979078469
2004-01-01	25.7790847343386
2004-04-01	25.7140514630927
2004-07-01	25.6919150627567
2004-10-01	25.3566475192488
2005-01-01	24.9029555768863
2005-04-01	24.5456574679840
2005-07-01	24.4785614291804
2005-10-01	24.5123576845193
2006-01-01	24.4706045285490
2006-04-01	24.3003660569053
2006-07-01	23.9585680333044
2006-10-01	24.0825160611954
2007-01-01	24.0308779491970
2007-04-01	23.9006173173504
2007-07-01	23.7738107353940
2007-10-01	23.5376510918682
2008-01-01	23.5876959379908
2008-04-01	23.3956553328441
2008-07-01	23.4810857501723
2008-10-01	23.5348302006837
2009-01-01	23.3719825805255
2009-04-01	23.4950761635886
2009-07-01	23.8180760735309
2009-10-01	23.7734780899754
2010-01-01	23.7633775874184
2010-04-01	23.8147847206636
2010-07-01	23.5166372589035
2010-10-01	23.1782647739464
2011-01-01	23.2501349545565
2011-04-01	23.4315062632037
2011-07-01	23.2690519678958
2011-10-01	23.4774678733747
2012-01-01	23.5933775935941
2012-04-01	23.5708583938267
2012-07-01	23.5555677621349
2012-10-01	23.5717931088568
2013-01-01	23.4798143895646
2013-04-01	23.4555970199043
2013-07-01	23.6237857552564
2013-10-01	23.8270345895781
2014-01-01	23.7948858185649
2014-04-01	23.7911539947089
2014-07-01	23.6117752066283
2014-10-01	23.6243926768165
2015-01-01	23.2542831615465
2015-04-01	23.1680008478444
2015-07-01	23.0238571961496
2015-10-01	22.8156480409495
2016-01-01	22.8853312313108
2016-04-01	22.9978646407562
2016-07-01	23.2050115756751
2016-10-01	23.1527820785198
2017-01-01	23.0409177910974
2017-04-01	22.6734199628500
2017-07-01	22.4241733675887
2017-10-01	22.1098385854719
2018-01-01	21.9460291864184
2018-04-01	21.9570229459015
2018-07-01	22.0577458881539