Quarter	Percent, Seasonally Adjusted
1999-01-01	51.2042398815975
1999-04-01	51.2589955068445
1999-07-01	50.9828457685771
1999-10-01	51.1685195287241
2000-01-01	51.1796858014022
2000-04-01	51.2499681598187
2000-07-01	52.1336544773152
2000-10-01	51.5421132635107
2001-01-01	51.7228670658227
2001-04-01	51.0250838266519
2001-07-01	51.9122964714958
2001-10-01	51.7440314312600
2002-01-01	52.1302771540154
2002-04-01	51.7547861454709
2002-07-01	50.8157311250534
2002-10-01	49.9000954052365
2003-01-01	50.1236608116325
2003-04-01	49.9753384894554
2003-07-01	49.2676520009913
2003-10-01	50.7636603805093
2004-01-01	51.8661546988318
2004-04-01	52.6675546515978
2004-07-01	53.3376933023619
2004-10-01	52.0009558274749
2005-01-01	52.5591505598322
2005-04-01	52.4320762340354
2005-07-01	52.9942260990815
2005-10-01	53.6010525144132
2006-01-01	53.4150468087099
2006-04-01	54.1961316048200
2006-07-01	52.9065886334621
2006-10-01	52.5456190740661
2007-01-01	52.8528572854890
2007-04-01	53.8040652194665
2007-07-01	53.6267810576265
2007-10-01	53.0149247088003
2008-01-01	52.9679998049674
2008-04-01	53.0664996329692
2008-07-01	54.0597963512921
2008-10-01	54.0704439227425
2009-01-01	53.3308873123614
2009-04-01	53.2969568747769
2009-07-01	54.0733971992923
2009-10-01	53.7638228549429
2010-01-01	53.6476586165918
2010-04-01	53.5209564513318
2010-07-01	52.5198145369036
2010-10-01	53.3348309451384
2011-01-01	52.2974627449572
2011-04-01	51.9823958971706
2011-07-01	52.1441682036781
2011-10-01	52.9086979833260
2012-01-01	53.2679223165354
2012-04-01	51.4990295622470
2012-07-01	51.9292499699761
2012-10-01	52.2311802275130
2013-01-01	51.3886025109410
2013-04-01	51.4654350868715
2013-07-01	51.9147895246171
2013-10-01	51.6355428651049
2014-01-01	52.3145504690708
2014-04-01	52.9808414315244
2014-07-01	51.9568361588652
2014-10-01	51.6502721672665
2015-01-01	51.2757164558296
2015-04-01	52.3377829374939
2015-07-01	52.1625204720539
2015-10-01	51.7814066022236
2016-01-01	51.6328434947832
2016-04-01	52.0264243264496
2016-07-01	51.5083274750733
2016-10-01	52.8698520415106
2017-01-01	53.6344840234211
2017-04-01	53.0172623496114
2017-07-01	54.0906930944902
2017-10-01	54.4904128708616
2018-01-01	54.2271097124264
2018-04-01	53.7747039497790