Quarter	Percent, Seasonally Adjusted
1998-01-01	88.5981181474174
1998-04-01	88.7430204048824
1998-07-01	88.9268336979041
1998-10-01	88.9691491619382
1999-01-01	88.8306604594527
1999-04-01	88.4518197974866
1999-07-01	88.0520595375502
1999-10-01	87.6285979930658
2000-01-01	88.3123475103120
2000-04-01	88.3976863419191
2000-07-01	88.4831122130755
2000-10-01	88.8895614361284
2001-01-01	88.6469987240461
2001-04-01	88.5470056550882
2001-07-01	88.4777890137130
2001-10-01	88.2923624909353
2002-01-01	88.1741421552308
2002-04-01	88.8044476507168
2002-07-01	88.7713582696338
2002-10-01	88.9891314350318
2003-01-01	89.2892467560056
2003-04-01	89.0101308393478
2003-07-01	89.3622395179317
2003-10-01	89.3397684701028
2004-01-01	89.1610019414813
2004-04-01	89.3156052926335
2004-07-01	89.2029571097411
2004-10-01	89.3266088614922
2005-01-01	89.5990507485242
2005-04-01	89.5455101041000
2005-07-01	89.2187825611465
2005-10-01	89.5711697087800
2006-01-01	89.7753001270793
2006-04-01	89.6422267541600
2006-07-01	90.0874113249940
2006-10-01	90.3958874337822
2007-01-01	90.2937524822736
2007-04-01	89.8965315719062
2007-07-01	89.9460157445591
2007-10-01	90.2205414033898
2008-01-01	90.4759492347577
2008-04-01	90.4751803877687
2008-07-01	89.8638365198156
2008-10-01	89.6157881697458
2009-01-01	88.8213754091725
2009-04-01	88.5497888975524
2009-07-01	88.2061729576759
2009-10-01	87.5724343711056
2010-01-01	87.0031491904297
2010-04-01	85.7036609265474
2010-07-01	84.6686403021819
2010-10-01	83.6707783798552
2011-01-01	82.0351099902974
2011-04-01	80.9015063434761
2011-07-01	79.4317531816068
2011-10-01	77.1843965087334
2012-01-01	76.0033565148004
2012-04-01	74.1120582697239
2012-07-01	73.0612570230109
2012-10-01	72.5688402054265
2013-01-01	71.7478368548714
2013-04-01	71.4015325863262
2013-07-01	71.1270675608185
2013-10-01	71.3123639340863
2014-01-01	71.4947877146604
2014-04-01	71.4472976902983
2014-07-01	71.9191772035684
2014-10-01	72.1469149685153
2015-01-01	72.3633522201332
2015-04-01	73.2739279462247
2015-07-01	74.1755658444156
2015-10-01	74.8216819127135
2016-01-01	75.4684491768214
2016-04-01	76.2826934315541
2016-07-01	76.1453094948334
2016-10-01	76.0660941029556
2017-01-01	76.5191803475634
2017-04-01	77.2780715676591
2017-07-01	78.1023584816891
2017-10-01	78.1161950076315
2018-01-01	78.5826608849757
2018-04-01	79.2857984813917