Quarter	US Dollars, sum over component sub-periods
2002-01-01	4383146.6819957700
2002-04-01	19311905.5587845970
2002-07-01	27543271.8404366970
2002-10-01	534249371.5236210000
2003-01-01	20396948.1094517000
2003-04-01	-21581939.3143650000
2003-07-01	22513140.4430309980
2003-10-01	506898365.0357040000
2004-01-01	-3750449.4966896700
2004-04-01	-47004602.3878700000
2004-07-01	46461736.1434785000
2004-10-01	461163219.3474870000
2005-01-01	129735427.9083360000
2005-04-01	-2517021.9079721197
2005-07-01	42682531.3170786950
2005-10-01	247386753.3711190000
2006-01-01	116681071.8409410000
2006-04-01	33935896.2251673900
2006-07-01	12745449.3248875010
2006-10-01	212834160.4776300200
2007-01-01	86533610.3067260100
2007-04-01	21569259.1813716000
2007-07-01	12373879.6881285010
2007-10-01	34777706.6995462000
2008-01-01	62924712.7345047000
2008-04-01	101533775.9840470000
2008-07-01	0.0000000000
2008-10-01	14447084.9342029000
2009-01-01	-3903177.5413529803
2009-04-01	-1361822.8775435300
2009-07-01	-14304237.3711865000
2009-10-01	41347105.2389408000
2010-01-01	67804651.4386249000
2010-04-01	5082745.8929597890
2010-07-01	16800469.9432152030
2010-10-01	31218369.4272072000
2011-01-01	32813411.7932682000
2011-04-01	1439297.1743667999
2011-07-01	-1411964.1795698800
2011-10-01	284286135.0652230000
2012-01-01	79996063.8749826000
2012-04-01	1282353.0869398200
2012-07-01	6256739.4935206500
2012-10-01	24658268.0587691000
2013-01-01	-273135402.1474250000
2013-04-01	-318666405.4043890000
2013-07-01	-343073043.2557350000
2013-10-01	-307611695.0412069600
2014-01-01	-2317502671.7366600000
2014-04-01	-2354449548.3506400000
2014-07-01	-2184138262.3908696000
2014-10-01	-2137676670.7575097000
2015-01-01	-794765070.9859480000
2015-04-01	-249966788.6423449800
2015-07-01	111169742.5700850000
2015-10-01	-514308548.8265199700
2016-01-01	-2609853245.0429500000
2016-04-01	-478788184.4848930000
2016-07-01	361542572.9494770000
2016-10-01	-2021407262.4679900000
2017-01-01	-15024355097.4676000000
2017-04-01	-6860408614.6780405000
2017-07-01	-7012883367.5312195000
2017-10-01	-2190182662.2841200000
2018-01-01	-537019518.8897821000
2018-04-01	-432408282.5595230000