Quarter	Percent, Seasonally Adjusted
1998-01-01	83.9208388504604
1998-04-01	83.9978087107207
1998-07-01	84.0670745712597
1998-10-01	84.0029616298050
1999-01-01	84.1850179820767
1999-04-01	84.3386362210237
1999-07-01	84.3483660906974
1999-10-01	84.4599149118987
2000-01-01	84.2703768351859
2000-04-01	84.6432201144450
2000-07-01	85.0905736804327
2000-10-01	85.4787891037583
2001-01-01	85.6236066339111
2001-04-01	85.3052739063977
2001-07-01	85.4444230167338
2001-10-01	85.4512830389118
2002-01-01	86.0739696104378
2002-04-01	85.7111708463816
2002-07-01	85.9026091754532
2002-10-01	86.2028532352647
2003-01-01	86.3634383423429
2003-04-01	86.2763547205399
2003-07-01	86.5646766817616
2003-10-01	86.8402515625116
2004-01-01	86.4242622942458
2004-04-01	86.8866698267590
2004-07-01	87.1060440670498
2004-10-01	86.7995530888145
2005-01-01	86.6146935544124
2005-04-01	86.6673295769365
2005-07-01	86.5702702627480
2005-10-01	86.7746650581478
2006-01-01	87.2963077331327
2006-04-01	87.5402657526273
2006-07-01	87.0020514439687
2006-10-01	87.0599559857127
2007-01-01	87.0821557129460
2007-04-01	87.3936710719428
2007-07-01	87.4470250946222
2007-10-01	87.4855302202747
2008-01-01	86.9398729606593
2008-04-01	86.9206904231192
2008-07-01	86.8114199793849
2008-10-01	86.3373153166480
2009-01-01	85.4449230103554
2009-04-01	84.9889152364668
2009-07-01	84.4975680746643
2009-10-01	84.0116397993880
2010-01-01	84.0129941995103
2010-04-01	83.6768447641144
2010-07-01	83.2849871513231
2010-10-01	83.3983766483433
2011-01-01	83.6412667865528
2011-04-01	83.8271240467706
2011-07-01	83.6478016050636
2011-10-01	82.6205262824462
2012-01-01	82.4209060308487
2012-04-01	81.8626156615422
2012-07-01	81.4229744394674
2012-10-01	81.1608753662856
2013-01-01	80.3357919803661
2013-04-01	79.0532156167314
2013-07-01	78.6507445407704
2013-10-01	78.8006374999805
2014-01-01	78.4547928410822
2014-04-01	78.2031769741832
2014-07-01	78.0580423532466
2014-10-01	78.1499478027950
2015-01-01	78.1728476875975
2015-04-01	78.1570623557117
2015-07-01	79.0554937882848
2015-10-01	79.1404307670899
2016-01-01	79.0700376299738
2016-04-01	79.5345868287440
2016-07-01	79.2220663928503
2016-10-01	79.4672399301224
2017-01-01	80.0287448420638
2017-04-01	79.7530091892707
2017-07-01	79.8940329937181
2017-10-01	79.7459530991174
2018-01-01	79.7366424048772
2018-04-01	80.4257747967382