Quarter	Percent, Seasonally Adjusted
1998-01-01	65.6066160966324
1998-04-01	65.3471993734233
1998-07-01	65.1405587271616
1998-10-01	64.8273359369814
1999-01-01	64.7831784790232
1999-04-01	64.6242237912390
1999-07-01	64.6036893315364
1999-10-01	64.6850424073782
2000-01-01	64.6107800307935
2000-04-01	64.3217554120894
2000-07-01	64.0747773845174
2000-10-01	63.8714035971751
2001-01-01	63.6724576591844
2001-04-01	63.7810485325702
2001-07-01	63.5102003593639
2001-10-01	63.5344417665612
2002-01-01	63.3565468533572
2002-04-01	63.2546737908491
2002-07-01	63.1117479865994
2002-10-01	63.1810259107757
2003-01-01	63.0864815709068
2003-04-01	62.7070168143979
2003-07-01	62.6669241529630
2003-10-01	63.1664912454741
2004-01-01	61.2583112467123
2004-04-01	61.5744869528441
2004-07-01	61.6011706842353
2004-10-01	61.4227318984091
2005-01-01	61.7378394797200
2005-04-01	61.9794778072986
2005-07-01	62.2335562595264
2005-10-01	61.7826090731544
2006-01-01	61.6194437518888
2006-04-01	61.7197221359135
2006-07-01	62.0138484926455
2006-10-01	61.8761916153008
2007-01-01	62.4420116646004
2007-04-01	62.3039748041022
2007-07-01	61.7629943554260
2007-10-01	61.7249447788631
2008-01-01	61.3248925959829
2008-04-01	61.1465560721875
2008-07-01	61.2398567869745
2008-10-01	61.6198906938680
2009-01-01	61.6614424867395
2009-04-01	61.6943979809517
2009-07-01	61.8660959549551
2009-10-01	61.8550950997515
2010-01-01	61.8559307213032
2010-04-01	61.7823931485513
2010-07-01	61.9492605832692
2010-10-01	61.7369459769208
2011-01-01	61.7414477931518
2011-04-01	61.8322725545520
2011-07-01	61.6400827766858
2011-10-01	61.1919673501128
2012-01-01	60.5590384374932
2012-04-01	60.2116421199557
2012-07-01	60.1945081677088
2012-10-01	60.1841427011635
2013-01-01	60.1552878428366
2013-04-01	60.4087490844794
2013-07-01	60.4381546552672
2013-10-01	60.2858541157902
2014-01-01	60.0366380350749
2014-04-01	60.1820217762516
2014-07-01	59.7737121885812
2014-10-01	59.5395643949632
2015-01-01	60.0714522002471
2015-04-01	60.1310027261605
2015-07-01	60.4099225662768
2015-10-01	60.2930315365982
2016-01-01	60.0832573475921
2016-04-01	59.4190643247533
2016-07-01	59.3983450826282
2016-10-01	59.2977262314869
2017-01-01	59.1397247012203
2017-04-01	59.2753888445367
2017-07-01	58.8535773983955
2017-10-01	58.9910183386750
2018-01-01	58.8433033161013
2018-04-01	58.5082766076182