Quarter	US Dollars, sum over component sub-periods
2004-01-01	116569433.32097399
2004-04-01	902702551.64295500
2004-07-01	622684519.16047800
2004-10-01	1026827823.19127000
2005-01-01	4870838287.14621000
2005-04-01	-1348122389.23887010
2005-07-01	1059803450.33640990
2005-10-01	-39000568.51473120
2006-01-01	1469815559.17782000
2006-04-01	1400884090.87742000
2006-07-01	-2560507267.66993000
2006-10-01	-1209088302.93868000
2007-01-01	3548476974.57985970
2007-04-01	1408316385.29708000
2007-07-01	556913633.26603590
2007-10-01	2197794197.51504040
2008-01-01	-244257492.93045500
2008-04-01	2595586033.18122000
2008-07-01	51274693.15723740
2008-10-01	-1491801088.34684010
2009-01-01	1000384403.84877000
2009-04-01	4475222340.18355000
2009-07-01	1972411291.11290000
2009-10-01	-2681655111.21130040
2010-01-01	1312089193.75723000
2010-04-01	1584164826.18824000
2010-07-01	287934207.94987300
2010-10-01	973470197.96491400
2011-01-01	2079003082.20181000
2011-04-01	158898408.05009500
2011-07-01	1070974830.20375990
2011-10-01	177577784.84168902
2012-01-01	1319148207.40729020
2012-04-01	-516531823.41936000
2012-07-01	-3413802202.45474000
2012-10-01	2078302656.27962000
2013-01-01	6674663921.55918000
2013-04-01	3595967543.60838000
2013-07-01	445597574.32907100
2013-10-01	-1926656435.09216020
2014-01-01	8760872755.21973000
2014-04-01	-1774133270.62088010
2014-07-01	4211055656.53080000
2014-10-01	-3645787583.69029000
2015-01-01	836191918.87870000
2015-04-01	-850440105.25265190
2015-07-01	-1126483001.46267000
2015-10-01	-765882028.34825800
2016-01-01	1285418851.22195000
2016-04-01	3851534763.30442000
2016-07-01	2414970482.64586000
2016-10-01	-12822359.50072980
2017-01-01	5339826290.77586000
2017-04-01	1196227388.61579000
2017-07-01	1702071776.28977010
2017-10-01	14689178310.32020000
2018-01-01	2068446805.93886000
2018-04-01	3174329452.79509000