Quarter	Percent, Seasonally Adjusted
1960-01-01	10.0000000000000
1960-04-01	11.5646258503401
1960-07-01	12.7340823970037
1960-10-01	11.2794612794613
1961-01-01	11.8380062305296
1961-04-01	10.4285714285714
1961-07-01	11.5030674846626
1961-10-01	10.0000000000000
1962-01-01	10.9375000000000
1962-04-01	10.8938547486034
1962-07-01	12.6805778491172
1962-10-01	11.3854595336077
1963-01-01	11.2466124661247
1963-04-01	11.4666666666667
1963-07-01	11.3440197287300
1963-10-01	11.0749185667752
1964-01-01	10.8527131782946
1964-04-01	11.1964873765093
1964-07-01	13.0221130221130
1964-10-01	11.8701007838746
1965-01-01	12.9181084198385
1965-04-01	13.4894091415831
1965-07-01	13.9931740614334
1965-10-01	13.7232845894263
1966-01-01	13.5944700460829
1966-04-01	12.7292340884574
1966-07-01	13.2837407013815
1966-10-01	13.2275132275132
1967-01-01	13.8446215139442
1967-04-01	13.4413727359390
1967-07-01	14.6366427840328
1967-10-01	14.6459747817653
1968-01-01	15.6378600823045
1968-04-01	14.9436090225564
1968-07-01	14.8815165876777
1968-10-01	14.2230026338894
1969-01-01	14.5535714285714
1969-04-01	14.5622895622896
1969-07-01	13.5072908672295
1969-10-01	14.0390390390390
1970-01-01	14.4079885877318
1970-04-01	14.6994931209269
1970-07-01	15.1854443666900
1970-10-01	14.7079521463758
1971-01-01	13.8869005010737
1971-04-01	14.5150931278099
1971-07-01	14.2945929148539
1971-10-01	14.8076923076923
1972-01-01	15.0769230769231
1972-04-01	13.6682242990654
1972-07-01	12.3394751535455
1972-10-01	11.4370959721532
1973-01-01	11.0747663551402
1973-04-01	11.5921115921116
1973-07-01	11.2570356472795
1973-10-01	10.9713790112749
1974-01-01	11.8703460359177
1974-04-01	12.4843945068664
1974-07-01	14.1982395713739
1974-10-01	13.2513181019332
1975-01-01	13.3678756476684
1975-04-01	12.0611183355006
1975-07-01	13.1275440976934
1975-10-01	13.2075471698113
1976-01-01	13.0658105939005
1976-04-01	12.7439384979302
1976-07-01	12.2739726027397
1976-10-01	12.6698087052953
1977-01-01	12.6745435016112
1977-04-01	12.5196850393701
1977-07-01	12.4097007223942
1977-10-01	12.5816172777499
1978-01-01	13.8402061855670
1978-04-01	14.0601874691663
1978-07-01	15.1796626741628
1978-10-01	15.1961896121570
1979-01-01	14.2798098780740
1979-04-01	13.4526558891455
1979-07-01	13.6111111111111
1979-10-01	12.6740045322111
1980-01-01	13.1011343665122
1980-04-01	13.1403480240690
1980-07-01	14.3468950749465
1980-10-01	14.3064282261962
1981-01-01	14.6054566247345
1981-04-01	14.5759032408125
1981-07-01	15.1408450704225
1981-10-01	15.9352578007676
1982-01-01	15.6315318005375
1982-04-01	15.4446177847114
1982-07-01	15.4334038054968
1982-10-01	14.9903020227210
1983-01-01	16.0121721489639
1983-04-01	15.2384857181905
1983-07-01	16.3044945336753
1983-10-01	15.1795770241522
1984-01-01	15.0857283828790
1984-04-01	14.8294267811557
1984-07-01	13.7953091684435
1984-10-01	15.2066115702479
1985-01-01	14.6750100928543
1985-04-01	13.7560887605990
1985-07-01	13.7233157748822
1985-10-01	14.2585551330798
1986-01-01	15.2480951496004
1986-04-01	16.4905660377358
1986-07-01	15.0563129816242
1986-10-01	15.9431983217686
1987-01-01	16.4098426784994
1987-04-01	15.7341058088123
1987-07-01	17.0917424410438
1987-10-01	16.0284649271433
1988-01-01	16.3657542224811
1988-04-01	18.3372397628568
1988-07-01	18.8737992712819
1988-10-01	18.0295122108383
1989-01-01	17.7205603937902
1989-04-01	17.1639620775897
1989-07-01	16.9739537606087
1989-10-01	16.9095864438915
1990-01-01	17.2607775426089
1990-04-01	18.1848058279016
1990-07-01	18.6342844696145
1990-10-01	18.4662118951183
1991-01-01	18.3466051969824
1991-04-01	18.1502770441717
1991-07-01	18.1711005177098
1991-10-01	19.4064160196159
1992-01-01	19.3150199827996
1992-04-01	18.8647414905230
1992-07-01	19.1582412414766
1992-10-01	18.7626546681665
1993-01-01	19.9748178793057
1993-04-01	19.9572154380961
1993-07-01	20.2364126943338
1993-10-01	20.5294389966752
1994-01-01	20.4735376044568
1994-04-01	20.7353065182562
1994-07-01	21.1185343922014
1994-10-01	21.0092896839885
1995-01-01	21.7689217925494
1995-04-01	21.6203983101992
1995-07-01	21.1959075955316
1995-10-01	20.8903102484929
1996-01-01	20.8716471772095
1996-04-01	20.9979209979210
1996-07-01	21.2329244494006
1996-10-01	21.9156283856988
1997-01-01	20.9164721738273
1997-04-01	19.5036101083032
1997-07-01	20.4384702532227
1997-10-01	19.5802125580982
1998-01-01	20.5279686576910
1998-04-01	19.8845996133794
1998-07-01	20.4139033633349
1998-10-01	21.0556356645037
1999-01-01	21.4588293497418
1999-04-01	22.8507711153689
1999-07-01	21.6887074346913
1999-10-01	20.4762813002370
2000-01-01	20.2914769030579
2000-04-01	19.9480595844767
2000-07-01	22.8229326143089
2000-10-01	19.4207154297918
2001-01-01	19.5151059738767
2001-04-01	19.2426517914611
2001-07-01	19.6384623761298
2001-10-01	19.3090670824013
2002-01-01	19.7574499105348
2002-04-01	20.5686671162059
2002-07-01	20.5037817094665
2002-10-01	21.1082491248927
2003-01-01	20.7022141286726
2003-04-01	21.5186522262335
2003-07-01	22.9251207729469
2003-10-01	23.4355332842520
2004-01-01	21.9202813599062
2004-04-01	21.4143362262938
2004-07-01	21.0666108961623
2004-10-01	20.6534567364433
2005-01-01	21.6160136702063
2005-04-01	18.8081761597623
2005-07-01	19.5751053916130
2005-10-01	19.1454037049983
2006-01-01	19.0234440883792
2006-04-01	18.0564799847865
2006-07-01	18.2578504745004
2006-10-01	18.7713621656109
2007-01-01	18.9417064279999
2007-04-01	18.9584064584065
2007-07-01	18.9541345637633
2007-10-01	19.2719176497802
2008-01-01	18.7340265851713
2008-04-01	17.2672342091100
2008-07-01	16.2752336815647
2008-10-01	15.8115770321161
2009-01-01	16.5410064818149
2009-04-01	19.4836750189825
2009-07-01	19.5676376499105
2009-10-01	20.2651844131782
2010-01-01	18.4673631998311
2010-04-01	16.0583026587198
2010-07-01	16.2925367033416
2010-10-01	16.1757318354112
2011-01-01	15.8309717524454
2011-04-01	15.5431887572811
2011-07-01	14.5959945107669
2011-10-01	14.5508298755187
2012-01-01	15.5475015940132
2012-04-01	15.2888125402620
2012-07-01	15.7953830953023
2012-10-01	16.3350068461890
2013-01-01	16.1708433788237
2013-04-01	15.7082898353112
2013-07-01	15.7049653040691
2013-10-01	15.8401010831796
2014-01-01	15.2730027387681
2014-04-01	16.7672480720460
2014-07-01	17.1000436146130
2014-10-01	17.5534268281390
2015-01-01	18.0165755314542
2015-04-01	18.8374285041023
2015-07-01	19.0348719432788
2015-10-01	19.9869228660016
2016-01-01	20.4698383988459
2016-04-01	19.8428083779342
2016-07-01	20.2043953135656
2016-10-01	17.8680021463066
2017-01-01	18.0287210794686
2017-04-01	19.0725777746138
2017-07-01	19.1898266476544
2017-10-01	18.9701678450771
2018-01-01	17.7424433249370
2018-04-01	17.4979887369268