Quarter	Percent, Seasonally Adjusted
1998-01-01	41275354.057173700
1998-04-01	43328630.886646700
1998-07-01	44125522.990530800
1998-10-01	42660434.241280400
1999-01-01	43004043.071038604
1999-04-01	44992311.773644900
1999-07-01	43420906.282258800
1999-10-01	46333573.010057600
2000-01-01	45644573.719724596
2000-04-01	46438215.886669000
2000-07-01	47741687.724552200
2000-10-01	48707231.396809600
2001-01-01	51403459.948756695
2001-04-01	53460613.397036490
2001-07-01	59461919.290323995
2001-10-01	58200836.255498700
2002-01-01	61152037.038449900
2002-04-01	57378401.696149300
2002-07-01	57002637.632751900
2002-10-01	57793764.774571600
2003-01-01	57083854.572025105
2003-04-01	55375921.137458400
2003-07-01	56046105.798629700
2003-10-01	56967831.800689705
2004-01-01	59102129.926640100
2004-04-01	62451669.791681506
2004-07-01	60605877.462887004
2004-10-01	63268824.643416600
2005-01-01	63251160.674474396
2005-04-01	65107918.953942604
2005-07-01	68964525.201299700
2005-10-01	78160429.995399190
2006-01-01	72634931.006463500
2006-04-01	81611418.348197800
2006-07-01	89102530.896690700
2006-10-01	78589007.816907800
2007-01-01	85026527.610256600
2007-04-01	82332649.540095100
2007-07-01	79497912.128649100
2007-10-01	78510409.423226700
2008-01-01	94142781.772724400
2008-04-01	106518571.038903000
2008-07-01	114888569.783880000
2008-10-01	123324807.543253000
2009-01-01	104926634.722236990
2009-04-01	106964684.354008990
2009-07-01	120171219.489321990
2009-10-01	123932541.683205010
2010-01-01	128547838.052516000
2010-04-01	132666915.663661000
2010-07-01	124352190.124861000
2010-10-01	129984921.851013020
2011-01-01	136880512.076978980
2011-04-01	145251127.701650000
2011-07-01	149346876.061387000
2011-10-01	145963958.737937000
2012-01-01	156168607.232375000
2012-04-01	157637271.502043000
2012-07-01	147812241.269097980
2012-10-01	142684104.699563000
2013-01-01	152483171.251331000
2013-04-01	141338688.706172020
2013-07-01	142231929.394005000
2013-10-01	143923383.010694000
2014-01-01	138822694.830031000
2014-04-01	136351755.251824000
2014-07-01	149479695.311410000
2014-10-01	159834027.157960000
2015-01-01	162510426.061458980
2015-04-01	169821140.671410000
2015-07-01	155015297.302248000
2015-10-01	153616585.812690020
2016-01-01	146468979.573564020
2016-04-01	143592596.177400000
2016-07-01	151538389.997971000
2016-10-01	141675117.692869000
2017-01-01	139179577.895300000
2017-04-01	138985080.649401000
2017-07-01	153468931.084638000
2017-10-01	156101250.378865000