Quarter	Percent, Seasonally Adjusted
1999-01-01	72.0295977046725
1999-04-01	72.2156244554311
1999-07-01	72.3980667309819
1999-10-01	72.6298819545496
2000-01-01	72.6768040008829
2000-04-01	72.7719563776836
2000-07-01	73.0546890007778
2000-10-01	73.4036006474753
2001-01-01	73.3514613265914
2001-04-01	73.0916174105680
2001-07-01	73.0900532932549
2001-10-01	72.8215318416637
2002-01-01	73.1545391911980
2002-04-01	73.0225914134238
2002-07-01	72.9495096648095
2002-10-01	72.8648453551942
2003-01-01	73.0089136495549
2003-04-01	73.7531592402981
2003-07-01	73.8927588879282
2003-10-01	74.1300219459056
2004-01-01	73.8276889130320
2004-04-01	73.6344129123090
2004-07-01	73.4787530671766
2004-10-01	73.5548916165266
2005-01-01	73.5648713283242
2005-04-01	73.5625365542597
2005-07-01	73.8621206159490
2005-10-01	73.7946805470756
2006-01-01	74.2397314249940
2006-04-01	74.5305692865891
2006-07-01	74.3401482544525
2006-10-01	74.7944752554375
2007-01-01	74.7515044479333
2007-04-01	74.6772983843270
2007-07-01	74.6338098101509
2007-10-01	74.5501464771222
2008-01-01	74.6119790286242
2008-04-01	74.4576376494433
2008-07-01	74.7291177932088
2008-10-01	74.3405781029409
2009-01-01	73.6192583966056
2009-04-01	73.1730019275439
2009-07-01	72.3775448103775
2009-10-01	72.5764900429970
2010-01-01	72.4876311690350
2010-04-01	72.4048300769906
2010-07-01	72.5688935309152
2010-10-01	72.3993147466852
2011-01-01	72.3544365793778
2011-04-01	72.9235903782384
2011-07-01	73.0531004820983
2011-10-01	73.6710763218654
2012-01-01	73.9892756258531
2012-04-01	74.4089195279760
2012-07-01	75.0590818050190
2012-10-01	74.9920715767665
2013-01-01	74.5102937214538
2013-04-01	75.6087161397516
2013-07-01	75.9190651979833
2013-10-01	76.7915173344574
2014-01-01	78.9631881845881
2014-04-01	78.6571855380418
2014-07-01	79.6073309446749
2014-10-01	79.6835972517506
2015-01-01	80.1740633096153
2015-04-01	80.4346373138322
2015-07-01	80.8409802176196
2015-10-01	81.0606370003197
2016-01-01	81.5317918106753
2016-04-01	82.1804072422284
2016-07-01	82.2607047671371
2016-10-01	82.8911646268629
2017-01-01	83.1848295370448
2017-04-01	83.5806915687156
2017-07-01	83.8783810948627
2017-10-01	83.9836358573995
2018-01-01	84.2714379703356
2018-04-01	84.4292889182135