Quarter	US Dollars, sum over component sub-periods
1999-01-01	72068155611.647600
1999-04-01	67870838862.198690
1999-07-01	67450315517.391300
1999-10-01	66741163402.547400
2000-01-01	75513877777.041400
2000-04-01	72814750252.794600
2000-07-01	68247981274.522410
2000-10-01	76372312451.590410
2001-01-01	78415987632.515090
2001-04-01	71953727697.507600
2001-07-01	66710587879.283905
2001-10-01	69932727783.762010
2002-01-01	69477258056.314900
2002-04-01	73562726731.612000
2002-07-01	73531682619.445890
2002-10-01	79992338015.301600
2003-01-01	85725152333.271500
2003-04-01	87519307485.921700
2003-07-01	82104297538.711990
2003-10-01	96789030067.451200
2004-01-01	100203259502.722000
2004-04-01	101515478203.217990
2004-07-01	98408402506.421200
2004-10-01	116644500241.978990
2005-01-01	116548280322.057000
2005-04-01	116814986748.986010
2005-07-01	108024608759.947000
2005-10-01	117644294821.879000
2006-01-01	123756515805.563000
2006-04-01	130729870454.663010
2006-07-01	122634164314.202990
2006-10-01	135584389552.270000
2007-01-01	137732663071.539000
2007-04-01	145444210817.386000
2007-07-01	142684581559.331020
2007-10-01	164897047244.785980
2008-01-01	173694680258.924000
2008-04-01	185344440855.555000
2008-07-01	170581207134.820000
2008-10-01	144067644335.229000
2009-01-01	122844706759.002000
2009-04-01	124549596734.375990
2009-07-01	127094579466.729000
2009-10-01	147220798250.238000
2010-01-01	140016605220.761020
2010-04-01	138461622243.064000
2010-07-01	138285960446.445980
2010-10-01	154967985836.656980
2011-01-01	169270719186.556980
2011-04-01	179129169132.995030
2011-07-01	164342746752.677000
2011-10-01	164806466006.223000
2012-01-01	166150513257.456020
2012-04-01	159256712220.143000
2012-07-01	146814392215.462000
2012-10-01	159254775355.769000
2013-01-01	159121823918.668980
2013-04-01	158976662010.901980
2013-07-01	154945827161.543000
2013-10-01	166359399128.413000
2014-01-01	165306053967.789000
2014-04-01	164112126934.539000
2014-07-01	154831428939.019000
2014-10-01	153204739761.644000
2015-01-01	137743143513.838000
2015-04-01	139997992355.774020
2015-07-01	134548739432.573000
2015-10-01	141662459816.986000
2016-01-01	136279967737.670990
2016-04-01	143197189770.551000
2016-07-01	134886624130.039020
2016-10-01	144269862039.639980
2017-01-01	146893439455.070980
2017-04-01	146171354436.816000
2017-07-01	149975402568.001000
2017-10-01	165520110908.220980
2018-01-01	169741178685.787000
2018-04-01	166885772920.176000