Quarter	US Dollars, sum over component sub-periods
2004-01-01	1878621180.15606000
2004-04-01	2101028025.94541980
2004-07-01	1406847193.73875000
2004-10-01	7821157991.80698000
2005-01-01	4194650282.22739000
2005-04-01	2653657195.15307000
2005-07-01	1295856866.04201000
2005-10-01	-3640875804.13123000
2006-01-01	3201059747.37483000
2006-04-01	-4424089055.13692000
2006-07-01	-2230073746.47335000
2006-10-01	-2675968320.72244000
2007-01-01	-2106327073.28802010
2007-04-01	-10536428590.31630000
2007-07-01	-5889768382.56386900
2007-10-01	-10368474516.45820000
2008-01-01	-13017855515.52560000
2008-04-01	-11890415335.14630000
2008-07-01	-2162671092.05741020
2008-10-01	-5504807734.82255000
2009-01-01	-4307564205.61541000
2009-04-01	-1224337023.22723000
2009-07-01	-4409880635.97849000
2009-10-01	-3703217361.38201000
2010-01-01	1185974149.55107000
2010-04-01	-1743911594.94561000
2010-07-01	-6422691348.64931000
2010-10-01	-1836147976.26521000
2011-01-01	-10932679192.12920000
2011-04-01	-549114238.71052800
2011-07-01	8791600910.65953000
2011-10-01	-223206288.93342102
2012-01-01	-1656755778.47872000
2012-04-01	3778313217.92153000
2012-07-01	1259689379.96688000
2012-10-01	2370754663.31395000
2013-01-01	-2374913586.08765000
2013-04-01	-990604700.87927700
2013-07-01	694175060.56958810
2013-10-01	861737668.72609300
2014-01-01	5888240207.85627000
2014-04-01	3745974320.90043000
2014-07-01	-3759739504.93511960
2014-10-01	-1736914872.93607000
2015-01-01	4125076762.33306030
2015-04-01	-6557967930.39009000
2015-07-01	3049259084.69938000
2015-10-01	6956012766.18476000
2016-01-01	-4910329877.84872000
2016-04-01	-2816011993.98847000
2016-07-01	-1932056616.88964000
2016-10-01	-3664812123.46264030
2017-01-01	8329720100.24104000
2017-04-01	2634175160.29166030
2017-07-01	4951800840.65214100
2017-10-01	2945752484.93968000
2018-01-01	-356961545.07626500
2018-04-01	8475183208.29826000