Quarter	Percent, Seasonally Adjusted
1999-07-01	69.8753916697069
1999-10-01	69.5436292738046
2000-01-01	68.9470558994726
2000-04-01	68.2231021213961
2000-07-01	68.7808552472099
2000-10-01	68.2631860441091
2001-01-01	67.7547325465158
2001-04-01	70.0105602696132
2001-07-01	70.7710357505188
2001-10-01	70.4481086897855
2002-01-01	71.3876286046247
2002-04-01	71.5671851645367
2002-07-01	72.9904695966944
2002-10-01	72.8482793989771
2003-01-01	71.0167188708506
2003-04-01	70.3523501520735
2003-07-01	70.4340251566562
2003-10-01	71.4893895975466
2004-01-01	72.3058571998077
2004-04-01	71.3073421800860
2004-07-01	71.3249071842631
2004-10-01	72.4236359777824
2005-01-01	72.4818631295854
2005-04-01	72.5486094026612
2005-07-01	71.9025450615628
2005-10-01	72.1396440927394
2006-01-01	72.5404732820740
2006-04-01	72.5438668961306
2006-07-01	72.4266500395092
2006-10-01	73.2492791888232
2007-01-01	74.5517840899820
2007-04-01	74.9545162507701
2007-07-01	75.1314584808675
2007-10-01	74.4480300698759
2008-01-01	74.7678192065588
2008-04-01	74.3382250017622
2008-07-01	74.3643171524840
2008-10-01	73.7818934282386
2009-01-01	74.2186879591983
2009-04-01	73.6000636521118
2009-07-01	74.5682727803477
2009-10-01	75.0120095441954
2010-01-01	74.2610471212704
2010-04-01	75.0825604667471
2010-07-01	75.4660546382724
2010-10-01	75.3024447753356
2011-01-01	76.3551198701534
2011-04-01	76.8289900284921
2011-07-01	75.9702561861930
2011-10-01	77.0786965376618
2012-01-01	76.8278674932359
2012-04-01	77.7269098181777
2012-07-01	77.0385152218933
2012-10-01	77.1512340430200
2013-01-01	76.6185864357557
2013-04-01	78.2135355513308
2013-07-01	78.9056980921264
2013-10-01	79.0210329479865
2014-01-01	79.2777462251623
2014-04-01	80.3275124098928
2014-07-01	79.6374709129007
2014-10-01	79.4662999474943
2015-01-01	79.7926425753239
2015-04-01	78.9761718271771
2015-07-01	78.8981712708623
2015-10-01	78.6953896170526
2016-01-01	78.6621038069456
2016-04-01	78.0929169477396
2016-07-01	79.5231419608908
2016-10-01	80.1147432374120
2017-01-01	80.6994318642035
2017-04-01	80.6507689747904
2017-07-01	80.1592179088341
2017-10-01	80.1926189967216
2018-01-01	79.8931650230958
2018-04-01	79.5804135295834
2018-07-01	79.3072386395409