Quarter	Percent, Seasonally Adjusted
1999-01-01	53.5201043578698
1999-04-01	53.8581390776818
1999-07-01	53.9157875211625
1999-10-01	54.2339648284114
2000-01-01	54.1968079178347
2000-04-01	54.3447622297168
2000-07-01	54.7111456898638
2000-10-01	55.0135948842268
2001-01-01	54.4168193149728
2001-04-01	54.1195844038038
2001-07-01	54.1341785437447
2001-10-01	53.8781865702222
2002-01-01	54.1175146191417
2002-04-01	54.0656104990075
2002-07-01	54.0761132968343
2002-10-01	54.1226563842453
2003-01-01	54.1146442099501
2003-04-01	54.6003975445548
2003-07-01	54.6969812659630
2003-10-01	54.7363015863648
2004-01-01	54.6533778959079
2004-04-01	54.4294921989591
2004-07-01	54.2199925924999
2004-10-01	54.2664525039203
2005-01-01	54.3039035120353
2005-04-01	54.0049130616544
2005-07-01	54.2903575304554
2005-10-01	54.3324255502286
2006-01-01	54.5057516010384
2006-04-01	54.8990468941671
2006-07-01	54.6500008254478
2006-10-01	54.9937367880952
2007-01-01	54.9302325851535
2007-04-01	54.7416537764106
2007-07-01	54.5263029661304
2007-10-01	54.0040899690078
2008-01-01	53.9857842592442
2008-04-01	53.7238916237295
2008-07-01	53.8302897776076
2008-10-01	53.1324144102717
2009-01-01	52.5416546587544
2009-04-01	52.2269921407708
2009-07-01	51.4250674127455
2009-10-01	51.5430977185640
2010-01-01	51.0591937123694
2010-04-01	50.9351804272319
2010-07-01	51.1953582822600
2010-10-01	51.3160822277238
2011-01-01	51.5146670410015
2011-04-01	51.8174029118441
2011-07-01	52.0114035860295
2011-10-01	52.1447288836821
2012-01-01	52.1774767378464
2012-04-01	52.2553787850874
2012-07-01	52.6449595264824
2012-10-01	53.0392456036586
2013-01-01	52.5434140396321
2013-04-01	53.9354039752244
2013-07-01	54.4352497414828
2013-10-01	55.1901037627725
2014-01-01	56.9866440298020
2014-04-01	56.6813489142433
2014-07-01	57.4293423670873
2014-10-01	57.6061888916973
2015-01-01	58.0279838472371
2015-04-01	58.6876330347930
2015-07-01	59.3073174495007
2015-10-01	59.7343891539059
2016-01-01	60.4015656822042
2016-04-01	60.8771406616412
2016-07-01	61.1473693849124
2016-10-01	61.7389618036274
2017-01-01	62.0446795996364
2017-04-01	62.6372664165118
2017-07-01	62.8791317149369
2017-10-01	63.2075707410330
2018-01-01	63.4762154452523
2018-04-01	63.3644757299981