Quarter	Percent, Seasonally Adjusted
1999-04-01	73.0353803160220
1999-07-01	73.6226395947220
1999-10-01	74.1799231880564
2000-01-01	74.6616553309732
2000-04-01	75.1730160459442
2000-07-01	75.5149770184935
2000-10-01	75.7262957200788
2001-01-01	75.8980272559553
2001-04-01	76.2400740925078
2001-07-01	76.5608623450570
2001-10-01	76.5341852091938
2002-01-01	76.2779128355526
2002-04-01	76.4293520851570
2002-07-01	75.8280577920107
2002-10-01	75.7289106496568
2003-01-01	75.8057297302406
2003-04-01	75.8579540481250
2003-07-01	75.7142119359233
2003-10-01	76.2672513111522
2004-01-01	76.5349508002147
2004-04-01	76.6220398883088
2004-07-01	76.8816637700086
2004-10-01	77.2563846874996
2005-01-01	77.6282043107270
2005-04-01	77.9098564847869
2005-07-01	78.1186182231604
2005-10-01	78.1189616399553
2006-01-01	78.2254587382028
2006-04-01	78.1201056518910
2006-07-01	78.2699682579138
2006-10-01	78.4816055747372
2007-01-01	78.6473424944231
2007-04-01	78.6541009908510
2007-07-01	78.6523171443052
2007-10-01	78.4192809874442
2008-01-01	78.3240249550948
2008-04-01	77.7890840020161
2008-07-01	76.9379439815429
2008-10-01	76.3038382545524
2009-01-01	73.3612359500915
2009-04-01	72.3806521203513
2009-07-01	71.8305825537746
2009-10-01	71.3591704177311
2010-01-01	70.8855936668637
2010-04-01	70.4581515566771
2010-07-01	69.9216681834003
2010-10-01	69.3205143623512
2011-01-01	68.9936752638179
2011-04-01	69.3325704762015
2011-07-01	68.9234244520590
2011-10-01	69.2376134041885
2012-01-01	69.1285915296512
2012-04-01	69.2516819529240
2012-07-01	69.4316497587782
2012-10-01	69.8067818360432
2013-01-01	70.2560193370141
2013-04-01	70.9555746692485
2013-07-01	71.5443430406466
2013-10-01	72.2389595203754
2014-01-01	72.3235777524539
2014-04-01	72.7093466843684
2014-07-01	72.9537470697003
2014-10-01	73.8874524230182
2015-01-01	73.9546103170779
2015-04-01	74.5212359834268
2015-07-01	74.6448033957847
2015-10-01	75.2608161317058
2016-01-01	75.1387402531274
2016-04-01	75.2921073443996
2016-07-01	75.8318380479896
2016-10-01	76.6197764458175
2017-01-01	77.0696932908811
2017-04-01	77.2030926904914
2017-07-01	78.6108718965214
2017-10-01	78.8808573115529
2018-01-01	79.1263685480814
2018-04-01	79.0309005753214