Quarter	Percent, Seasonally Adjusted
1999-04-01	67.1495421689322
1999-07-01	67.5308983956144
1999-10-01	67.7751084279011
2000-01-01	67.9595086947412
2000-04-01	68.2192865419197
2000-07-01	68.2379066483856
2000-10-01	68.3034295471111
2001-01-01	68.3704975181392
2001-04-01	68.4130748854910
2001-07-01	68.8031308166938
2001-10-01	68.6323442165012
2002-01-01	68.6679546068484
2002-04-01	68.6150376065880
2002-07-01	68.3961934309506
2002-10-01	68.5442943892617
2003-01-01	68.6098585480994
2003-04-01	68.7413360364306
2003-07-01	68.8771342463172
2003-10-01	69.0354415491578
2004-01-01	69.2295048221363
2004-04-01	69.2240874300062
2004-07-01	69.5070165488965
2004-10-01	69.9600893455609
2005-01-01	70.1688424561759
2005-04-01	70.6353587098366
2005-07-01	71.0507548597119
2005-10-01	71.2213109032164
2006-01-01	71.6272218371394
2006-04-01	71.6696844683416
2006-07-01	72.1062451605008
2006-10-01	72.1672198977271
2007-01-01	75.6608829269100
2007-04-01	75.7688514502469
2007-07-01	75.4692420124557
2007-10-01	75.4132969091967
2008-01-01	75.2864105568521
2008-04-01	74.9717639725895
2008-07-01	74.8260798121805
2008-10-01	74.2647501105987
2009-01-01	73.6613902379975
2009-04-01	73.4012218919330
2009-07-01	72.6908781072920
2009-10-01	72.2969468640281
2010-01-01	71.8869950908786
2010-04-01	71.7159035331602
2010-07-01	71.4079885613793
2010-10-01	71.3567855197308
2011-01-01	71.1833298492635
2011-04-01	71.1640318952458
2011-07-01	70.9720517899064
2011-10-01	71.4509050329175
2012-01-01	71.2996881029989
2012-04-01	70.9886174748295
2012-07-01	71.1482313499561
2012-10-01	71.1161196233915
2013-01-01	71.4421250102900
2013-04-01	71.9495407979864
2013-07-01	71.8450951396844
2013-10-01	72.0054078147419
2014-01-01	71.9723662367886
2014-04-01	71.5838831683450
2014-07-01	71.8530065560318
2014-10-01	71.8440264677149
2015-01-01	71.9504072010946
2015-04-01	71.9924423696726
2015-07-01	71.9386119847649
2015-10-01	72.2274240443583
2016-01-01	72.2948288115426
2016-04-01	72.8944877258766
2016-07-01	72.9271706651463
2016-10-01	72.6394675306609
2017-01-01	72.7998273888551
2017-04-01	72.4227450069332
2017-07-01	72.5677979430570
2017-10-01	72.7989618338843
2018-01-01	72.7615939463745
2018-04-01	72.9566163921083