Quarter	Percent, Seasonally Adjusted
1998-01-01	51.8686587107779
1998-04-01	51.8810413121212
1998-07-01	51.5919011908457
1998-10-01	52.0879927248879
1999-01-01	52.1293565427370
1999-04-01	52.2800984981969
1999-07-01	52.2798894993043
1999-10-01	52.3286194140042
2000-01-01	52.7838237719771
2000-04-01	52.7130664844381
2000-07-01	53.1761454347303
2000-10-01	53.1401244156129
2001-01-01	53.5721662444309
2001-04-01	53.4329948276069
2001-07-01	53.4026121832796
2001-10-01	53.7813097102277
2002-01-01	53.6904147459853
2002-04-01	54.0642085819718
2002-07-01	54.4858802253029
2002-10-01	54.4527741816934
2003-01-01	54.8742190468319
2003-04-01	54.7748717767780
2003-07-01	54.3647610637629
2003-10-01	54.3497330169475
2004-01-01	54.1561542545342
2004-04-01	54.3121983810025
2004-07-01	54.6286694735300
2004-10-01	54.8675984508558
2005-01-01	54.9994386343413
2005-04-01	55.2110913979372
2005-07-01	55.4489593354862
2005-10-01	55.5179982341287
2006-01-01	55.3243845436748
2006-04-01	55.5220385716634
2006-07-01	55.7256303562222
2006-10-01	55.6002244790045
2007-01-01	55.8439667303238
2007-04-01	55.7798011931905
2007-07-01	56.1774528379195
2007-10-01	56.0615132805910
2008-01-01	55.7327723959755
2008-04-01	56.0425298360282
2008-07-01	55.9563749001019
2008-10-01	55.5958107578905
2009-01-01	55.8253081463647
2009-04-01	55.4707820270164
2009-07-01	55.5232972970110
2009-10-01	55.7868995507566
2010-01-01	56.1477254376913
2010-04-01	56.0670406192929
2010-07-01	55.7631956673350
2010-10-01	55.4956472180656
2011-01-01	54.8994550032272
2011-04-01	55.1127277620681
2011-07-01	54.3799243851732
2011-10-01	54.1682827935687
2012-01-01	54.7265193127981
2012-04-01	54.8757551713396
2012-07-01	54.8308899798384
2012-10-01	54.3644852267799
2013-01-01	53.9240997971314
2013-04-01	54.2252181550327
2013-07-01	54.0786319514825
2013-10-01	54.3579281391986
2014-01-01	53.7494007698530
2014-04-01	53.8868471372674
2014-07-01	54.1071437482418
2014-10-01	53.5390785308487
2015-01-01	53.8962383128893
2015-04-01	53.9246759780732
2015-07-01	53.7125989027029
2015-10-01	53.4701643088557
2016-01-01	53.5184312734366
2016-04-01	53.2136685591549
2016-07-01	53.5719669874440
2016-10-01	53.7234899245350
2017-01-01	53.7548523652419
2017-04-01	54.0654328831703
2017-07-01	54.2942728702773
2017-10-01	54.1636891139954
2018-01-01	54.2542077637484
2018-04-01	54.4446336221796