Quarter	Percent, Seasonally Adjusted
1999-01-01	50.7184039796499
1999-04-01	51.0632931046000
1999-07-01	50.9844515750103
1999-10-01	51.0637586502613
2000-01-01	50.8294063891629
2000-04-01	51.2359814941407
2000-07-01	51.1346805683883
2000-10-01	50.9435859723324
2001-01-01	50.8830445009448
2001-04-01	50.2988381901991
2001-07-01	50.5448068657246
2001-10-01	49.9087811948685
2002-01-01	49.5564075059957
2002-04-01	49.6453702693326
2002-07-01	49.4449304745288
2002-10-01	49.2372723339025
2003-01-01	49.1142096380806
2003-04-01	48.5810381779414
2003-07-01	48.8457519671405
2003-10-01	49.0124029475924
2004-01-01	49.8336815556018
2004-04-01	49.7488215610227
2004-07-01	49.5299131566232
2004-10-01	49.3487838603140
2005-01-01	49.1144424338111
2005-04-01	48.8456992969296
2005-07-01	48.3954713500594
2005-10-01	48.4303215241767
2006-01-01	48.3404078140014
2006-04-01	48.0535904347063
2006-07-01	47.8924541133937
2006-10-01	47.7635222021828
2007-01-01	47.5369387962519
2007-04-01	47.2939841681565
2007-07-01	46.8116766891578
2007-10-01	46.9606951759838
2008-01-01	46.8446807562696
2008-04-01	46.7647655372390
2008-07-01	46.6441207873655
2008-10-01	46.2084933326253
2009-01-01	46.1781820241578
2009-04-01	45.9145155566744
2009-07-01	45.7601672509835
2009-10-01	45.9585634653508
2010-01-01	45.9728626314839
2010-04-01	45.9238552764642
2010-07-01	45.7977967419583
2010-10-01	45.6815690541100
2011-01-01	45.5375997177698
2011-04-01	45.6354314445181
2011-07-01	45.5109073365666
2011-10-01	45.2672580615999
2012-01-01	45.1194113502063
2012-04-01	45.0263502103980
2012-07-01	44.9206624892267
2012-10-01	44.9138572231937
2013-01-01	44.8814144462353
2013-04-01	44.7621602465300
2013-07-01	44.4703292371386
2013-10-01	44.7107541602863
2014-01-01	44.5031593096693
2014-04-01	44.5389018721973
2014-07-01	44.9721238742894
2014-10-01	44.7537911861249
2015-01-01	44.9774289627110
2015-04-01	44.7256291292015
2015-07-01	44.5389464448686
2015-10-01	44.3191527540146
2016-01-01	44.1888293741533
2016-04-01	44.1358854942739
2016-07-01	43.9329516636272
2016-10-01	44.1056116918164
2017-01-01	44.1151757702594
2017-04-01	44.0101563189016
2017-07-01	44.2013489221674
2017-10-01	44.0193634699717
2018-01-01	44.1458996405290
2018-04-01	44.2769185541000