Quarter	Percent, Seasonally Adjusted
1999-01-01	68.2185403488884
1999-04-01	68.1586682414656
1999-07-01	68.1216592700936
1999-10-01	67.7606923186222
2000-01-01	68.5274864671304
2000-04-01	68.5193752217423
2000-07-01	67.9194003572207
2000-10-01	68.4855528611054
2001-01-01	68.5895283193755
2001-04-01	68.2432830548430
2001-07-01	69.0083180486860
2001-10-01	69.3942230687960
2002-01-01	68.6507726803828
2002-04-01	69.0217228227012
2002-07-01	68.3849809720432
2002-10-01	68.4076705382569
2003-01-01	68.0730323996233
2003-04-01	68.0386521304074
2003-07-01	68.2325695217740
2003-10-01	67.8930779765060
2004-01-01	68.1134133486005
2004-04-01	68.5811656736449
2004-07-01	68.9990292840782
2004-10-01	68.4054855334434
2005-01-01	68.4857115059514
2005-04-01	68.2204214958693
2005-07-01	68.3378586007192
2005-10-01	69.2922882672692
2006-01-01	69.2662517306976
2006-04-01	69.2583420050139
2006-07-01	69.9311184711661
2006-10-01	69.9455894653238
2007-01-01	69.7760585147955
2007-04-01	69.4208819602600
2007-07-01	68.7822943304219
2007-10-01	69.0411136416186
2008-01-01	69.3634980378759
2008-04-01	69.9700446630091
2008-07-01	69.9393012874693
2008-10-01	69.7444139177197
2009-01-01	68.5749055841201
2009-04-01	67.5053081914915
2009-07-01	67.1309774052105
2009-10-01	65.6091192039954
2010-01-01	65.6281685313988
2010-04-01	65.3241120699586
2010-07-01	65.0575216310570
2010-10-01	64.7727334132562
2011-01-01	64.9276282773453
2011-04-01	64.9149759322890
2011-07-01	64.7901936866044
2011-10-01	64.3298726368530
2012-01-01	64.4288192156987
2012-04-01	64.1525652006460
2012-07-01	63.7484751730925
2012-10-01	63.9136222552242
2013-01-01	63.8025819751244
2013-04-01	63.7578733446600
2013-07-01	63.5816446692941
2013-10-01	63.3281285242574
2014-01-01	63.1203592505610
2014-04-01	63.5002861322976
2014-07-01	64.1287743703536
2014-10-01	64.5230640688279
2015-01-01	64.4668370795785
2015-04-01	64.0322237509178
2015-07-01	63.8581435429566
2015-10-01	64.6273815972161
2016-01-01	65.9256775670198
2016-04-01	66.0661825047482
2016-07-01	65.5052342433481
2016-10-01	65.4408630850399
2017-01-01	64.6632931429633
2017-04-01	64.7229592756686
2017-07-01	64.9222684854303
2017-10-01	65.1656480158200
2018-01-01	65.6377536719756
2018-04-01	66.0221401504205