Quarter	Percent, Seasonally Adjusted
1986-01-01	18.6243178636763
1986-04-01	18.1697420976195
1986-07-01	18.2843744338513
1986-10-01	18.4586699448668
1987-01-01	18.2927351543857
1987-04-01	17.9278283568155
1987-07-01	17.7467021632786
1987-10-01	17.9081645069469
1988-01-01	18.8851444663815
1988-04-01	18.3771768708166
1988-07-01	18.5961418203132
1988-10-01	18.5693442685142
1989-01-01	19.0529573379303
1989-04-01	19.3758874680866
1989-07-01	19.0915328281983
1989-10-01	19.4384884202486
1990-01-01	19.3139262388286
1990-04-01	19.0953267518094
1990-07-01	19.1860590907884
1990-10-01	18.6312164462418
1991-01-01	18.5369988502653
1991-04-01	18.4306616090157
1991-07-01	18.5511485655934
1991-10-01	19.1109907712993
1992-01-01	18.7458242220071
1992-04-01	18.4516797347877
1992-07-01	18.9946924498627
1992-10-01	18.7741774783151
1993-01-01	19.1881161610971
1993-04-01	18.9985451605690
1993-07-01	19.1542261939379
1993-10-01	18.7743494290900
1994-01-01	18.8563393649132
1994-04-01	18.6916693575640
1994-07-01	18.9901441656957
1994-10-01	18.5200990841565
1995-01-01	18.7015183616675
1995-04-01	18.4628913936670
1995-07-01	18.3502458224632
1995-10-01	18.5418824293324
1996-01-01	18.1539274122864
1996-04-01	17.9195567564358
1996-07-01	17.4612473425296
1996-10-01	18.0554421112408
1997-01-01	18.2874934017260
1997-04-01	18.2091948515894
1997-07-01	17.8461540348721
1997-10-01	18.3015173999999
1998-01-01	18.3191125945691
1998-04-01	18.7287327340464
1998-07-01	18.8088127609481
1998-10-01	18.3409464984375
1999-01-01	18.4364619132903
1999-04-01	18.2777761777814
1999-07-01	18.4844465998283
1999-10-01	17.8071454217393
2000-01-01	17.9895153034705
2000-04-01	18.3293745542827
2000-07-01	17.7070207473675
2000-10-01	17.8280583292044
2001-01-01	17.8390462220307
2001-04-01	17.9428288859684
2001-07-01	17.8690177886928
2001-10-01	16.9934397093805
2002-01-01	17.0715572935112
2002-04-01	17.7026700571245
2002-07-01	17.2731138074039
2002-10-01	17.1802204973367
2003-01-01	17.5835414911874
2003-04-01	17.9171801341684
2003-07-01	17.3722754060422
2003-10-01	17.5140196271981
2004-01-01	17.3232350382843
2004-04-01	17.6535738943417
2004-07-01	17.0926887702138
2004-10-01	16.5423799119731
2005-01-01	16.4462122295756
2005-04-01	16.6591815402545
2005-07-01	15.8166492732306
2005-10-01	15.7478218428525
2006-01-01	15.9329978739724
2006-04-01	15.8609053249377
2006-07-01	15.8015516409228
2006-10-01	16.4620713305999
2007-01-01	15.9529184604784
2007-04-01	15.9629017970050
2007-07-01	16.3319327945781
2007-10-01	15.8488154155579
2008-01-01	16.7973445389947
2008-04-01	15.7099922088633
2008-07-01	15.4481923455490
2008-10-01	15.2622583690555
2009-01-01	16.0006272062672
2009-04-01	15.7462348248306
2009-07-01	16.2429482777440
2009-10-01	15.9512694541681
2010-01-01	16.1045299724150
2010-04-01	16.3251146856187
2010-07-01	16.2966819388957
2010-10-01	16.3429348466599
2011-01-01	15.8326803128462
2011-04-01	15.7854950427364
2011-07-01	15.7615292783471
2011-10-01	15.6260555499837
2012-01-01	15.5928391725333
2012-04-01	16.1623829134038
2012-07-01	16.2176035041578
2012-10-01	16.6815017424291
2013-01-01	15.9148993631374
2013-04-01	15.9401489765673
2013-07-01	15.1120691687692
2013-10-01	14.8617148063795
2014-01-01	14.6665861695338
2014-04-01	15.1249521483302
2014-07-01	14.3515201964358
2014-10-01	14.5120019921207
2015-01-01	14.2640228422090
2015-04-01	14.6153293131721
2015-07-01	15.3890236551216
2015-10-01	15.1036178953451
2016-01-01	14.5655710435073
2016-04-01	13.7265833503309
2016-07-01	13.2950422828120
2016-10-01	12.5488432549078
2017-01-01	12.8090921395931
2017-04-01	13.2601248204203
2017-07-01	12.5615194110780
2017-10-01	12.6318423952397
2018-01-01	12.5764546701000
2018-04-01	12.4849911997104
2018-07-01	12.3268326277042