Quarter	Percent, Seasonally Adjusted
1999-04-01	41.0559599486183
1999-07-01	40.7406193675242
1999-10-01	41.5017443187376
2000-01-01	42.1899325376232
2000-04-01	42.6063383463500
2000-07-01	43.1341702250618
2000-10-01	43.5339594914063
2001-01-01	43.6709263144510
2001-04-01	43.8897852013540
2001-07-01	43.8623507228158
2001-10-01	44.4147448250140
2002-01-01	44.7841062861361
2002-04-01	45.6241251293287
2002-07-01	45.7184193869247
2002-10-01	46.3307416267943
2003-01-01	46.3685990624815
2003-04-01	47.2057004887816
2003-07-01	47.6197438446693
2003-10-01	47.7346748865883
2004-01-01	47.6114741773177
2004-04-01	48.2442265105979
2004-07-01	47.4303210667888
2004-10-01	48.1881374280668
2005-01-01	48.7234042553191
2005-04-01	49.0222121743062
2005-07-01	48.7951637846197
2005-10-01	49.0400761222434
2006-01-01	49.5604762434628
2006-04-01	50.0747011952191
2006-07-01	50.3997573886193
2006-10-01	50.5071328440670
2007-01-01	50.2151097470748
2007-04-01	49.9016769541705
2007-07-01	49.6226260864827
2007-10-01	50.0571801993138
2008-01-01	49.9673859868457
2008-04-01	49.9728703201302
2008-07-01	50.0338780930699
2008-10-01	50.7520424173565
2009-01-01	50.5552703396471
2009-04-01	50.7556131260794
2009-07-01	50.5203839516825
2009-10-01	50.7350565428110
2010-01-01	51.2557814348715
2010-04-01	50.5807388288434
2010-07-01	51.7148837958242
2010-10-01	50.8938861936798
2011-01-01	51.1588695000535
2011-04-01	50.9497475354653
2011-07-01	51.5654268129516
2011-10-01	51.3265306122449
2012-01-01	52.4416536409206
2012-04-01	52.9858819711148
2012-07-01	52.6907347723641
2012-10-01	53.7952901005393
2013-01-01	54.4833383042759
2013-04-01	55.0698305084746
2013-07-01	55.4565158493633
2013-10-01	56.0454999864905
2014-01-01	56.3366603722687
2014-04-01	56.4095658731014
2014-07-01	56.0480841472577
2014-10-01	56.8722914771815
2015-01-01	57.3645477815700
2015-04-01	57.1090740002657
2015-07-01	58.0142369472598
2015-10-01	58.3462845402102
2016-01-01	58.8800000000000
2016-04-01	59.6611231496228
2016-07-01	58.9021888712902
2016-10-01	59.4863853400439
2017-01-01	60.3161162856336
2017-04-01	60.3801020408163
2017-07-01	61.0896915584416
2017-10-01	61.8042420115508
2018-01-01	62.2684082533156
2018-04-01	62.3087275083487