Quarter	Percent, Seasonally Adjusted
1999-04-01	62.2427244294570
1999-07-01	62.6687722303333
1999-10-01	62.8977946754305
2000-01-01	63.0268486080528
2000-04-01	63.2910118013911
2000-07-01	63.3467645139820
2000-10-01	63.3437520180241
2001-01-01	63.4515995316831
2001-04-01	63.5114211984668
2001-07-01	63.9514728180727
2001-10-01	63.8055035075592
2002-01-01	63.8908750608290
2002-04-01	63.8258603353113
2002-07-01	63.6023336393595
2002-10-01	63.7121616190307
2003-01-01	63.7910730408100
2003-04-01	63.9206098396016
2003-07-01	64.0229212036964
2003-10-01	64.2325224000013
2004-01-01	64.3924107173517
2004-04-01	64.2893685819719
2004-07-01	64.5888370012334
2004-10-01	65.0519645295110
2005-01-01	65.2829877382284
2005-04-01	65.6629392947261
2005-07-01	66.0746580834240
2005-10-01	66.2681532874878
2006-01-01	66.7127449800479
2006-04-01	66.8356272687253
2006-07-01	67.2636016910014
2006-10-01	67.3233995716860
2007-01-01	70.6950181373471
2007-04-01	70.8156479664953
2007-07-01	70.5676445640756
2007-10-01	70.4582628053381
2008-01-01	70.3254323041035
2008-04-01	70.0354522994201
2008-07-01	69.9251939085628
2008-10-01	69.3026186859992
2009-01-01	68.5934849574549
2009-04-01	68.4021271525551
2009-07-01	67.7694321476785
2009-10-01	67.3488111095194
2010-01-01	66.8568004483665
2010-04-01	66.7405949200142
2010-07-01	66.3648509541621
2010-10-01	66.1973316657960
2011-01-01	66.0071140308070
2011-04-01	66.0451750614346
2011-07-01	65.7524779352982
2011-10-01	66.1022817486014
2012-01-01	66.0303175452072
2012-04-01	65.6662061451938
2012-07-01	65.6658158904778
2012-10-01	65.5731965429411
2013-01-01	65.8789722130556
2013-04-01	66.2962032873279
2013-07-01	66.2077293030629
2013-10-01	66.2686766703914
2014-01-01	66.1682418324992
2014-04-01	65.7562330491872
2014-07-01	66.0713459301966
2014-10-01	66.0431237610089
2015-01-01	66.0736845743556
2015-04-01	66.1644242673956
2015-07-01	66.1043988863408
2015-10-01	66.2274938361867
2016-01-01	66.2975618738036
2016-04-01	66.8828957379201
2016-07-01	66.8108767258138
2016-10-01	66.4988562174380
2017-01-01	66.5931416739059
2017-04-01	66.2201705733787
2017-07-01	66.3804896094584
2017-10-01	66.7358409673856
2018-01-01	66.7049818822342
2018-04-01	66.8457558969833