Quarter	Percent, Seasonally Adjusted
1998-01-01	71.0313821872051
1998-04-01	70.9398985018395
1998-07-01	70.9009890923060
1998-10-01	70.9375268836453
1999-01-01	71.0511566681054
1999-04-01	70.9348208074138
1999-07-01	70.9017856053908
1999-10-01	70.9520151508502
2000-01-01	71.1530427585822
2000-04-01	70.9602027455450
2000-07-01	70.9968619743514
2000-10-01	71.0784226545719
2001-01-01	70.8849469672803
2001-04-01	71.1783139066444
2001-07-01	70.6980540514320
2001-10-01	70.3402119432137
2002-01-01	70.3325131936304
2002-04-01	69.8700026696868
2002-07-01	69.6070099366467
2002-10-01	69.5794486980235
2003-01-01	69.1127032569040
2003-04-01	68.5526056878669
2003-07-01	68.3985511937036
2003-10-01	68.1183803322350
2004-01-01	68.7201434351992
2004-04-01	68.3682454731378
2004-07-01	67.8240595275236
2004-10-01	67.5540696808314
2005-01-01	67.5418538888904
2005-04-01	67.5718221123199
2005-07-01	67.6448749757966
2005-10-01	67.0432624601214
2006-01-01	67.0992375923554
2006-04-01	66.7200991020223
2006-07-01	66.3494580282736
2006-10-01	66.2099862111704
2007-01-01	65.6633523090501
2007-04-01	65.6049614428717
2007-07-01	65.3817173472275
2007-10-01	65.3107798305388
2008-01-01	65.1869731374264
2008-04-01	64.7341529759914
2008-07-01	64.3359512977908
2008-10-01	64.0978700495657
2009-01-01	63.6254043682782
2009-04-01	63.0058167644217
2009-07-01	63.0375153678302
2009-10-01	62.8123498987650
2010-01-01	62.3740057406505
2010-04-01	62.3719828340466
2010-07-01	62.0583517326314
2010-10-01	61.7165311805246
2011-01-01	61.4165195586817
2011-04-01	61.1956359285732
2011-07-01	60.5086078881962
2011-10-01	59.4972188139000
2012-01-01	58.5571168935394
2012-04-01	57.4860689697674
2012-07-01	57.2520854291146
2012-10-01	56.5603217191897
2013-01-01	55.9894871523578
2013-04-01	55.3647791892620
2013-07-01	54.2806669103356
2013-10-01	53.2389332340453
2014-01-01	52.2548877064812
2014-04-01	51.5665468230828
2014-07-01	50.6053227010335
2014-10-01	49.9183392012421
2015-01-01	49.5828002467974
2015-04-01	48.9471761837325
2015-07-01	48.7658799123554
2015-10-01	48.4176812199015
2016-01-01	47.3986532620482
2016-04-01	46.7463096079406
2016-07-01	46.3657458445204
2016-10-01	45.8966221808920
2017-01-01	45.3272617890521
2017-04-01	44.9133469610885
2017-07-01	44.3414954245756
2017-10-01	43.7874577463995
2018-01-01	43.3794736780385
2018-04-01	42.7318963935099