Quarter	Percent, Seasonally Adjusted
1999-01-01	65.1636475348701
1999-04-01	66.0059315841971
1999-07-01	66.5629704460853
1999-10-01	67.0614471351010
2000-01-01	67.8465730367670
2000-04-01	68.2352546869474
2000-07-01	68.6054099836535
2000-10-01	69.0441489911851
2001-01-01	69.1291280181256
2001-04-01	69.2974886526439
2001-07-01	69.6969601059474
2001-10-01	69.8149327756213
2002-01-01	70.0758569958998
2002-04-01	70.5192616591404
2002-07-01	70.6301575753631
2002-10-01	70.7942559266712
2003-01-01	71.1062251810343
2003-04-01	71.5562658230383
2003-07-01	71.9699657997272
2003-10-01	72.2720350121850
2004-01-01	72.3302288915682
2004-04-01	72.6231854908172
2004-07-01	73.0925992757752
2004-10-01	73.7290677437464
2005-01-01	74.0323563301722
2005-04-01	74.6643382121820
2005-07-01	75.0090004296182
2005-10-01	75.3254617415910
2006-01-01	75.6627928026986
2006-04-01	75.9816719967505
2006-07-01	76.2307464696347
2006-10-01	76.6630709164334
2007-01-01	76.9894388588548
2007-04-01	77.2404172463511
2007-07-01	77.1304042753039
2007-10-01	77.0615123062976
2008-01-01	76.9263727952662
2008-04-01	76.2108496378057
2008-07-01	75.2222552042234
2008-10-01	73.8906087646083
2009-01-01	71.9050046375118
2009-04-01	70.9530098671939
2009-07-01	70.6714715714823
2009-10-01	70.3324684693618
2010-01-01	70.1615547965446
2010-04-01	69.8944334506977
2010-07-01	69.8670183942805
2010-10-01	69.9125026847380
2011-01-01	69.6445611041603
2011-04-01	69.6077731339748
2011-07-01	68.8163999657194
2011-10-01	68.1902342877823
2012-01-01	67.6834807652685
2012-04-01	66.8069535851106
2012-07-01	66.2946768243160
2012-10-01	65.9629436930144
2013-01-01	65.7963793200433
2013-04-01	65.5764793618008
2013-07-01	65.7827587877154
2013-10-01	66.1981329639059
2014-01-01	66.5285457026061
2014-04-01	67.2159320959121
2014-07-01	67.6452404727103
2014-10-01	68.2429017932876
2015-01-01	68.4256603080233
2015-04-01	69.1926205069634
2015-07-01	69.6889145574632
2015-10-01	70.2735326480587
2016-01-01	70.8286636247466
2016-04-01	71.1816497567931
2016-07-01	71.7129814714643
2016-10-01	72.2489247919865
2017-01-01	72.5100597121764
2017-04-01	73.0084015043848
2017-07-01	73.4368828478183
2017-10-01	73.7186916539569
2018-01-01	73.9209434590403
2018-04-01	74.6183044174008
2018-07-01	74.8465461887661