Quarter	Percent, Seasonally Adjusted
1981-01-01	8.69835905189665
1981-04-01	11.11455949101910
1981-07-01	15.57740585774060
1981-10-01	9.63028381036490
1982-01-01	8.97368189419946
1982-04-01	11.23089362029800
1982-07-01	14.69352152882400
1982-10-01	10.04173517136710
1983-01-01	8.79882220490171
1983-04-01	11.47830567107050
1983-07-01	15.57760073540680
1983-10-01	9.70839635583383
1984-01-01	8.72961491023708
1984-04-01	10.23939747153230
1984-07-01	13.40702171066650
1984-10-01	8.78540566490638
1985-01-01	8.45596174610520
1985-04-01	10.43855260963820
1985-07-01	14.60249427032180
1985-10-01	9.53872196360559
1986-01-01	9.16094607152492
1986-04-01	11.77803253630310
1986-07-01	16.39501168257190
1986-10-01	9.91555359311182
1987-01-01	9.53296782156902
1987-04-01	11.85806179479070
1987-07-01	15.92656308800600
1987-10-01	10.14585794258130
1988-01-01	10.40311427547000
1988-04-01	11.57944365865160
1988-07-01	15.70295638207100
1988-10-01	10.45455640401800
1989-01-01	10.13710618436410
1989-04-01	12.36120370583230
1989-07-01	16.51994801500700
1989-10-01	11.10189769954280
1990-01-01	10.35054361074550
1990-04-01	12.88937329700270
1990-07-01	16.07348669955280
1990-10-01	11.18113858539390
1991-01-01	11.35045778229910
1991-04-01	13.19862134216400
1991-07-01	16.76401461382730
1991-10-01	12.33591576817860
1992-01-01	10.86081491420100
1992-04-01	13.21668909825030
1992-07-01	16.26490575714840
1992-10-01	11.66422743038150
1993-01-01	11.02730245340930
1993-04-01	12.43434757063760
1993-07-01	15.81505807265580
1993-10-01	11.03626124940790
1994-01-01	11.54126710196240
1994-04-01	12.62788258364620
1994-07-01	14.20350430845180
1994-10-01	9.91563864513120
1995-01-01	9.83858359504642
1995-04-01	11.21624104354220
1995-07-01	14.86554223396330
1995-10-01	10.31376041066470
1996-01-01	10.70241671762420
1996-04-01	11.84417177914110
1996-07-01	15.08988805465780
1996-10-01	10.94416573880620
1997-01-01	10.76007270154550
1997-04-01	12.14141460503970
1997-07-01	15.22928593643810
1997-10-01	10.81893397872460
1998-01-01	11.90026359553360
1998-04-01	13.09462861043560
1998-07-01	15.98340757003230
1998-10-01	11.28096781074460
1999-01-01	11.49864804875100
1999-04-01	12.39043633039880
1999-07-01	15.18339255238790
1999-10-01	11.06660988229320
2000-01-01	11.31942816967420
2000-04-01	11.98478123018390
2000-07-01	14.88600622524970
2000-10-01	10.74190392020710
2001-01-01	10.89762451985400
2001-04-01	12.08647961211350
2001-07-01	15.66507830809540
2001-10-01	11.84803720665020
2002-01-01	12.42096549780730
2002-04-01	13.00808314087760
2002-07-01	15.95459952418720
2002-10-01	12.35976531985970
2003-01-01	12.31768240127860
2003-04-01	13.18302665640520
2003-07-01	16.23760976730220
2003-10-01	13.24287867967940
2004-01-01	13.14011654891440
2004-04-01	13.13413044969250
2004-07-01	15.93398396708620
2004-10-01	13.43127485938750
2005-01-01	13.44410627621950
2005-04-01	13.85122532412660
2005-07-01	15.87482541240420
2005-10-01	12.80069991765670
2006-01-01	13.24239049740160
2006-04-01	14.10779053385690
2006-07-01	16.13297519164600
2006-10-01	13.56047855160810
2007-01-01	12.97847110207630
2007-04-01	13.71591602674200
2007-07-01	16.01486382380930
2007-10-01	13.92906121431240
2008-01-01	13.67912458419250
2008-04-01	13.36617427563640
2008-07-01	14.91161104878490
2008-10-01	14.48148616577270
2009-01-01	16.59567628385440
2009-04-01	18.13223702967930
2009-07-01	19.05646929329930
2009-10-01	16.69835373279480
2010-01-01	16.02130014554520
2010-04-01	16.19639660354430
2010-07-01	18.01764555098940
2010-10-01	15.38620569011310
2011-01-01	15.04847105518060
2011-04-01	15.89533896075590
2011-07-01	16.83705584858150
2011-10-01	14.59347742319680
2012-01-01	15.13087782303390
2012-04-01	16.14219862710680
2012-07-01	17.83287216380740
2012-10-01	15.72017295449440
2013-01-01	15.61230581075380
2013-04-01	16.21978748004180
2013-07-01	17.52708379394210
2013-10-01	15.69681207011930
2014-01-01	15.18254318118060
2014-04-01	15.55534779356770
2014-07-01	16.62343668943790
2014-10-01	15.25341935156140
2015-01-01	16.08976015799480
2015-04-01	16.55589960476300
2015-07-01	17.45139230879520
2015-10-01	16.00201568454540
2016-01-01	16.57666301465770
2016-04-01	17.76714138124940
2016-07-01	18.62048044290240
2016-10-01	16.17526692009680
2017-01-01	16.23141382969640
2017-04-01	16.57578999103760
2017-07-01	18.97621054485530
2017-10-01	16.58635693480530
2018-01-01	16.91917518569160
2018-04-01	16.38422121560710