Quarter	Percent, Seasonally Adjusted
1999-04-01	71.0052744943491
1999-07-01	71.3498939592696
1999-10-01	71.5845608123981
2000-01-01	71.7077654303044
2000-04-01	71.7733425943002
2000-07-01	71.6641077064724
2000-10-01	71.5334247573041
2001-01-01	71.6078491304843
2001-04-01	71.7210780542598
2001-07-01	71.9467590899879
2001-10-01	71.6941239815090
2002-01-01	71.4770655007786
2002-04-01	71.3007058122842
2002-07-01	71.0499247705022
2002-10-01	71.1291686766187
2003-01-01	71.0580792567996
2003-04-01	71.1390634342311
2003-07-01	71.0565632077883
2003-10-01	71.3626123854712
2004-01-01	71.6638181267124
2004-04-01	71.4806175603960
2004-07-01	71.7220275828314
2004-10-01	71.7806627386325
2005-01-01	71.8316702987929
2005-04-01	72.1853607750353
2005-07-01	72.5823022235193
2005-10-01	72.7035316605554
2006-01-01	73.1273289699511
2006-04-01	73.2965755530859
2006-07-01	73.5778305865512
2006-10-01	73.7424772374866
2007-01-01	76.7208781736897
2007-04-01	76.5049855103067
2007-07-01	76.2591524829235
2007-10-01	76.1046516327758
2008-01-01	75.8793544138344
2008-04-01	75.5123628870496
2008-07-01	75.1684667708532
2008-10-01	74.3305461238436
2009-01-01	73.2628970496203
2009-04-01	72.7855224462401
2009-07-01	71.7392264980216
2009-10-01	71.2581439391541
2010-01-01	70.7329038955717
2010-04-01	70.3531366594015
2010-07-01	70.0910499038210
2010-10-01	69.5498627227816
2011-01-01	69.4092771816557
2011-04-01	69.2368681315175
2011-07-01	68.8886156721759
2011-10-01	69.2662364815279
2012-01-01	68.9963705137723
2012-04-01	68.7952664214988
2012-07-01	68.7785248856865
2012-10-01	68.4592604730512
2013-01-01	68.6285380711859
2013-04-01	68.8968984259044
2013-07-01	68.9926723009905
2013-10-01	69.0817989395984
2014-01-01	68.9600634388836
2014-04-01	68.7060244986181
2014-07-01	68.7445222867089
2014-10-01	68.9356833296729
2015-01-01	69.0928935658441
2015-04-01	69.1311753674501
2015-07-01	69.1062273346232
2015-10-01	69.0076572856976
2016-01-01	69.0305848077440
2016-04-01	69.2771427641840
2016-07-01	69.1469084269162
2016-10-01	68.7647385940317
2017-01-01	68.5404680440378
2017-04-01	68.4512110377712
2017-07-01	68.5119799659568
2017-10-01	68.7308899387473
2018-01-01	68.7911321353750
2018-04-01	68.6393474253072