Quarter	US Dollars, sum over component sub-periods
1999-01-01	64382591886.559500
1999-04-01	65706297411.050500
1999-07-01	71431478108.035300
1999-10-01	72910037563.432510
2000-01-01	66369045292.557900
2000-04-01	68444931356.002610
2000-07-01	73516907611.498410
2000-10-01	72206510432.067500
2001-01-01	69008191210.642700
2001-04-01	68315627688.174000
2001-07-01	75468675842.637900
2001-10-01	72704456666.043100
2002-01-01	66354616697.127495
2002-04-01	71861899620.613400
2002-07-01	82677524402.890900
2002-10-01	81178191536.026290
2003-01-01	79116863202.884600
2003-04-01	87782493556.402700
2003-07-01	95580213145.101610
2003-10-01	97513204586.138400
2004-01-01	97549566453.848110
2004-04-01	101220072355.904000
2004-07-01	109820994383.707000
2004-10-01	115505582538.467000
2005-01-01	109146939682.829990
2005-04-01	114017191047.180000
2005-07-01	121089487695.926000
2005-10-01	116677226700.888000
2006-01-01	115643091460.615000
2006-04-01	123728015243.879000
2006-07-01	134195943760.288010
2006-10-01	139342911835.905000
2007-01-01	132124498454.477980
2007-04-01	144065665539.957000
2007-07-01	160247791413.556000
2007-10-01	167847500936.908020
2008-01-01	169067616382.513000
2008-04-01	182112074045.651000
2008-07-01	182464970251.825000
2008-10-01	157402960415.178000
2009-01-01	135922173005.388000
2009-04-01	144989196303.426970
2009-07-01	158158805680.987000
2009-10-01	161805251282.110000
2010-01-01	148741541715.675020
2010-04-01	148880234774.453000
2010-07-01	160488427648.326000
2010-10-01	167217123875.606000
2011-01-01	160818941366.455000
2011-04-01	172284159631.141000
2011-07-01	181598784580.455000
2011-10-01	173605458718.406000
2012-01-01	162387026304.858000
2012-04-01	168887696844.296020
2012-07-01	173234726074.751980
2012-10-01	174171080825.952000
2013-01-01	169219520981.536000
2013-04-01	177587302490.461000
2013-07-01	187740695962.833000
2013-10-01	191832641927.954000
2014-01-01	185361154705.139000
2014-04-01	196292118067.864000
2014-07-01	203578375043.371000
2014-10-01	196825330817.083000
2015-01-01	175859220763.857030
2015-04-01	214784626769.578000
2015-07-01	193956626994.858000
2015-10-01	204873059587.431000
2016-01-01	184253214405.294000
2016-04-01	195982006205.628000
2016-07-01	199958484725.824000
2016-10-01	207214609326.882000
2017-01-01	177652023789.434000
2017-04-01	192377383218.009000
2017-07-01	201613643495.577000
2017-10-01	209926182137.788020
2018-01-01	201591105890.898000
2018-04-01	203087756708.789000