Quarter	Percent, Seasonally Adjusted
1998-01-01	33.3898267793090
1998-04-01	32.2907305697665
1998-07-01	35.1001486705475
1998-10-01	34.5697534295050
1999-01-01	37.3657122949969
1999-04-01	37.5060142887219
1999-07-01	38.6250290854077
1999-10-01	37.9715519283901
2000-01-01	38.7305961956208
2000-04-01	40.2836208220573
2000-07-01	40.3409836317350
2000-10-01	42.3563983638864
2001-01-01	42.6205068269818
2001-04-01	45.0283459571362
2001-07-01	45.7254978594385
2001-10-01	46.3320113291476
2002-01-01	46.3877504619328
2002-04-01	47.3605678579864
2002-07-01	47.7223194424044
2002-10-01	47.4800305667066
2003-01-01	47.8739088554783
2003-04-01	48.1777169492911
2003-07-01	48.5970851658461
2003-10-01	48.4134030122300
2004-01-01	49.7356058784504
2004-04-01	49.8944990816040
2004-07-01	50.9537155674979
2004-10-01	51.1564374347174
2005-01-01	51.2732288453146
2005-04-01	52.8043614548849
2005-07-01	53.2971390689423
2005-10-01	53.3105739673769
2006-01-01	53.5765980326078
2006-04-01	53.7046323372544
2006-07-01	54.5767677048924
2006-10-01	55.2863352377284
2007-01-01	55.5072278681694
2007-04-01	55.2205340893822
2007-07-01	54.5078543023594
2007-10-01	54.6894760748278
2008-01-01	55.2300965372338
2008-04-01	55.7303827495496
2008-07-01	56.2885775974502
2008-10-01	56.1190649760285
2009-01-01	56.5495714515341
2009-04-01	56.1791007560336
2009-07-01	56.2539900659456
2009-10-01	56.1495527847216
2010-01-01	56.0685048698267
2010-04-01	57.2808683341227
2010-07-01	56.9025929496878
2010-10-01	57.1981339360592
2011-01-01	56.5376356667751
2011-04-01	57.0512856024888
2011-07-01	57.5565278513356
2011-10-01	57.5785596872526
2012-01-01	59.3552024572686
2012-04-01	58.5443333110360
2012-07-01	61.1924429018875
2012-10-01	59.6964945713593
2013-01-01	60.0468998315545
2013-04-01	60.4868262252229
2013-07-01	60.6195090218405
2013-10-01	60.9062265489332
2014-01-01	60.9703447364690
2014-04-01	62.0001065734935
2014-07-01	60.8493127737408
2014-10-01	61.7888790249488
2015-01-01	61.8234237978308
2015-04-01	62.1164354931773
2015-07-01	63.4749554406108
2015-10-01	62.4994991773260
2016-01-01	63.3421843977556
2016-04-01	62.4897288162611
2016-07-01	63.3845791062732
2016-10-01	62.6886207968165
2017-01-01	63.2763078072511
2017-04-01	63.2573682471530
2017-07-01	63.0892000652446
2017-10-01	63.9375022920889
2018-01-01	66.6103277713348
2018-04-01	65.9907086807639