Quarter	Percent, Seasonally Adjusted
1999-01-01	35.0460623860393
1999-04-01	34.8273630041078
1999-07-01	35.0306577889545
1999-10-01	35.0574477036294
2000-01-01	35.6510055732244
2000-04-01	36.7238537974457
2000-07-01	37.6127238736949
2000-10-01	38.0987695936359
2001-01-01	38.8586894505342
2001-04-01	39.0267354358553
2001-07-01	39.3149207255280
2001-10-01	39.5654537407311
2002-01-01	39.4258921818390
2002-04-01	39.8344526002945
2002-07-01	39.8521417173603
2002-10-01	40.3742132171646
2003-01-01	40.5220313497087
2003-04-01	40.8203868380626
2003-07-01	40.8596756983694
2003-10-01	41.3035066842156
2004-01-01	41.1647009822971
2004-04-01	40.9427182889327
2004-07-01	41.2502277684726
2004-10-01	41.5855303495783
2005-01-01	42.2924010032729
2005-04-01	42.9134252474359
2005-07-01	43.1746575822871
2005-10-01	43.9366789704970
2006-01-01	44.1729815199045
2006-04-01	44.1658979032341
2006-07-01	43.8446930458756
2006-10-01	44.2579247276076
2007-01-01	43.9859064002584
2007-04-01	44.6327770747912
2007-07-01	44.5668538185816
2007-10-01	44.9322346412177
2008-01-01	45.2505163863053
2008-04-01	45.7261875352060
2008-07-01	45.5082828523627
2008-10-01	45.4035013199673
2009-01-01	44.6036023293315
2009-04-01	44.3885118798353
2009-07-01	43.5462439475602
2009-10-01	43.3527912288501
2010-01-01	43.2961247293598
2010-04-01	43.3064463958528
2010-07-01	43.6682832709719
2010-10-01	43.8762047057053
2011-01-01	44.2528672245556
2011-04-01	44.7697999006640
2011-07-01	44.5239210088854
2011-10-01	44.4289190765870
2012-01-01	43.9009373013513
2012-04-01	44.1575889952160
2012-07-01	43.9717382205489
2012-10-01	43.4413433162761
2013-01-01	42.8046428861118
2013-04-01	43.0401752087521
2013-07-01	43.5082405471408
2013-10-01	43.6072284218397
2014-01-01	43.4224820841721
2014-04-01	43.9828359041817
2014-07-01	44.5228463226329
2014-10-01	45.3756739680486
2015-01-01	45.9427779418497
2015-04-01	46.6685965843396
2015-07-01	46.9704046947319
2015-10-01	48.0634177511728
2016-01-01	48.6946354526352
2016-04-01	48.7253064065552
2016-07-01	49.4270744789505
2016-10-01	49.4897340816930
2017-01-01	49.8625228818508
2017-04-01	50.4024831859091
2017-07-01	50.6433704437281
2017-10-01	51.0967468862997
2018-01-01	51.0819791094135
2018-04-01	51.9872489268617
2018-07-01	52.4737812690397