Quarter	Percent, Seasonally Adjusted
1998-01-01	70.1924224978461
1998-04-01	70.9704545394110
1998-07-01	70.4335457983154
1998-10-01	71.3789719386653
1999-01-01	71.3535247234576
1999-04-01	72.0223656368494
1999-07-01	72.1660698214468
1999-10-01	72.6133458952252
2000-01-01	73.3843033795206
2000-04-01	73.7569359487577
2000-07-01	74.1846081082264
2000-10-01	74.3067773617055
2001-01-01	75.0045432677824
2001-04-01	74.5680407957988
2001-07-01	74.3743000280598
2001-10-01	74.6589365049127
2002-01-01	73.9778455911418
2002-04-01	74.3270465241244
2002-07-01	74.2316709880514
2002-10-01	73.4054370643452
2003-01-01	74.1431513670694
2003-04-01	74.2488168142296
2003-07-01	74.3140388270703
2003-10-01	74.2788771706146
2004-01-01	74.6240765714905
2004-04-01	74.8445910842208
2004-07-01	74.6536612471850
2004-10-01	75.2264784259096
2005-01-01	74.6612165341499
2005-04-01	74.8790477196938
2005-07-01	74.6835042016569
2005-10-01	74.9388339630935
2006-01-01	75.0818152770024
2006-04-01	75.5050197948773
2006-07-01	75.1843009704732
2006-10-01	75.1535550710828
2007-01-01	74.6460677432559
2007-04-01	74.6153512828646
2007-07-01	74.9875269162543
2007-10-01	75.1259025578737
2008-01-01	75.6474781663281
2008-04-01	76.2801984852387
2008-07-01	75.6501483095465
2008-10-01	75.6635238785120
2009-01-01	75.3123979699296
2009-04-01	75.1325115892091
2009-07-01	74.4296043592819
2009-10-01	74.7290945732913
2010-01-01	74.8107210316307
2010-04-01	74.6564903779334
2010-07-01	74.4790415857629
2010-10-01	74.2540937778197
2011-01-01	74.2864589036228
2011-04-01	75.1161771188584
2011-07-01	73.5588023837235
2011-10-01	73.4150030793741
2012-01-01	73.2982411088917
2012-04-01	73.0968759948689
2012-07-01	72.2749051324231
2012-10-01	71.3856019585404
2013-01-01	71.6206538885064
2013-04-01	71.6944309194884
2013-07-01	72.1993168051720
2013-10-01	73.3298074383920
2014-01-01	73.6349923193541
2014-04-01	74.3209453323252
2014-07-01	74.2117975583672
2014-10-01	75.1620698025358
2015-01-01	75.2188026754199
2015-04-01	76.7902338312604
2015-07-01	75.8077058786415
2015-10-01	76.5867155423592
2016-01-01	76.7432264678112
2016-04-01	77.2580531376806
2016-07-01	77.8737580818476
2016-10-01	78.4216460235854
2017-01-01	78.7069985846859
2017-04-01	79.2834835694790
2017-07-01	79.9468789121062
2017-10-01	80.7896255269539
2018-01-01	80.9314742369581
2018-04-01	82.0403641268412