Quarter	Percent, Seasonally Adjusted
1998-01-01	70.4576952045750
1998-04-01	70.7470760201073
1998-07-01	70.6619084842694
1998-10-01	70.6972165330134
1999-01-01	70.5994947136856
1999-04-01	70.2175189036034
1999-07-01	70.5182443023961
1999-10-01	70.6650309980384
2000-01-01	70.9873078840823
2000-04-01	71.0423964854492
2000-07-01	71.4406036319480
2000-10-01	71.6309687675201
2001-01-01	71.8318960063247
2001-04-01	71.7548977413404
2001-07-01	71.8284049658652
2001-10-01	71.8270595319925
2002-01-01	71.8816333157889
2002-04-01	71.4917143981456
2002-07-01	71.2976000385175
2002-10-01	70.4850070872933
2003-01-01	70.0653959507276
2003-04-01	69.8301114667878
2003-07-01	69.8398295310391
2003-10-01	69.6710294432620
2004-01-01	69.5814683755125
2004-04-01	69.1627418289844
2004-07-01	68.7636201404796
2004-10-01	68.5693145953424
2005-01-01	68.3157949980756
2005-04-01	68.2130141801354
2005-07-01	68.1625751901564
2005-10-01	68.3073875499493
2006-01-01	68.6289686030673
2006-04-01	68.7427478469885
2006-07-01	68.8239063895360
2006-10-01	68.3980402959174
2007-01-01	68.4482296979642
2007-04-01	68.3490237108419
2007-07-01	68.6688700149910
2007-10-01	68.7441212457967
2008-01-01	68.9410327059511
2008-04-01	68.7658180797769
2008-07-01	68.3496689140065
2008-10-01	68.0732682245155
2009-01-01	66.7699159866075
2009-04-01	66.2297883858118
2009-07-01	65.2268920997856
2009-10-01	64.9038118738483
2010-01-01	65.1074687515577
2010-04-01	64.5743096778258
2010-07-01	64.6085178626589
2010-10-01	64.3895843021106
2011-01-01	63.6491719641581
2011-04-01	63.2934815687312
2011-07-01	63.1586056485003
2011-10-01	61.4336562914365
2012-01-01	61.2753119417707
2012-04-01	60.3841274362205
2012-07-01	59.4098877264568
2012-10-01	58.6995125016938
2013-01-01	58.3080610954852
2013-04-01	58.3704915674234
2013-07-01	58.8012452364052
2013-10-01	59.6308309901640
2014-01-01	59.7645333557160
2014-04-01	60.2593784961936
2014-07-01	60.6553087531656
2014-10-01	60.4195354738588
2015-01-01	60.7199372671480
2015-04-01	60.8632484076949
2015-07-01	60.8452501711261
2015-10-01	61.5623958359745
2016-01-01	61.2018356910826
2016-04-01	62.0054790221385
2016-07-01	62.4409120236508
2016-10-01	62.6992081456662
2017-01-01	63.6368403863166
2017-04-01	64.1712076361205
2017-07-01	64.6596176646664
2017-10-01	65.1735093617202
2018-01-01	65.2989872308165
2018-04-01	65.5381844637554