Quarter	Percent, Seasonally Adjusted
1991-01-01	18.6600699995679
1991-04-01	19.2608984748369
1991-07-01	22.6623170118692
1991-10-01	19.4509641730859
1992-01-01	19.6902063234114
1992-04-01	21.3105520090124
1992-07-01	25.1383547509614
1992-10-01	21.3522656000987
1993-01-01	22.4870466321244
1993-04-01	24.1012830702850
1993-07-01	27.8013070739016
1993-10-01	23.1786101462422
1994-01-01	23.1307813039171
1994-04-01	23.5982021620370
1994-07-01	27.5478225478225
1994-10-01	22.0793750686765
1995-01-01	22.7070872757096
1995-04-01	22.9042683167146
1995-07-01	27.1788012716136
1995-10-01	22.5441337141324
1996-01-01	22.1841541755889
1996-04-01	23.6581124720540
1996-07-01	27.6395194589242
1996-10-01	23.1390667639350
1997-01-01	22.8496056518715
1997-04-01	23.6754095577625
1997-07-01	26.5694521126303
1997-10-01	22.7696062688676
1998-01-01	21.6311706657356
1998-04-01	22.8155671246906
1998-07-01	26.9585561136158
1998-10-01	23.3161791154254
1999-01-01	22.4090828739936
1999-04-01	23.7005427662362
1999-07-01	26.7086375868148
1999-10-01	24.0080537650664
2000-01-01	22.0294244030202
2000-04-01	22.8267442010061
2000-07-01	25.1966402862428
2000-10-01	21.8727758007117
2001-01-01	22.2733406943933
2001-04-01	23.0496709420185
2001-07-01	26.9873841932076
2001-10-01	24.1903727340621
2002-01-01	24.3412832260223
2002-04-01	23.7935298016622
2002-07-01	27.1856234266111
2002-10-01	23.0912695226861
2003-01-01	22.2183945442830
2003-04-01	23.1829629582638
2003-07-01	27.3861648950025
2003-10-01	22.2283584150214
2004-01-01	22.1222695974080
2004-04-01	22.9816264918156
2004-07-01	25.0220928858093
2004-10-01	21.1254521808505
2005-01-01	22.0479430021565
2005-04-01	21.8734615488653
2005-07-01	25.0238462292022
2005-10-01	20.9572524662039
2006-01-01	20.0294652065020
2006-04-01	20.2641133168262
2006-07-01	22.9279886646708
2006-10-01	20.0556059818289
2007-01-01	19.2134393443515
2007-04-01	20.1986740203400
2007-07-01	23.1863187087897
2007-10-01	20.0444410390008
2008-01-01	19.1515161939490
2008-04-01	20.1627463868804
2008-07-01	22.0558356535480
2008-10-01	20.1675126038970
2009-01-01	20.1202402829648
2009-04-01	22.8093325783040
2009-07-01	24.4148288458937
2009-10-01	21.3574380365248
2010-01-01	19.9178077056447
2010-04-01	20.6899296580097
2010-07-01	22.5338793566328
2010-10-01	19.9188430414986
2011-01-01	18.2707660817138
2011-04-01	19.1612141377082
2011-07-01	21.6283884113892
2011-10-01	19.7320625918157
2012-01-01	19.0527819493791
2012-04-01	20.3250330542089
2012-07-01	23.1338121082022
2012-10-01	20.7770971571748
2013-01-01	20.8724608724609
2013-04-01	21.8056920683164
2013-07-01	23.7534582604514
2013-10-01	22.1256223941131
2014-01-01	20.0700319711172
2014-04-01	21.3256339801935
2014-07-01	23.8615858918794
2014-10-01	22.6797576340136
2015-01-01	20.4985781858070
2015-04-01	21.6161864893704
2015-07-01	23.8502370168883
2015-10-01	23.8753388428661
2016-01-01	21.6762835098641
2016-04-01	22.6638016372562
2016-07-01	24.6880766839583
2016-10-01	23.4643140995072
2017-01-01	20.8888159120404
2017-04-01	22.4735222077328
2017-07-01	24.3563387175722
2017-10-01	22.7115605428757
2018-01-01	20.0044780880404
2018-04-01	21.4492392339812