Quarter	US Dollars, sum over component sub-periods
2006-01-01	96552743626.3546000
2006-04-01	22577561664.1546020
2006-07-01	78766303764.3197000
2006-10-01	80758686419.0168000
2007-01-01	127714147019.3220000
2007-04-01	200079630575.9580000
2007-07-01	5053040272.4773410
2007-10-01	135002379854.9459800
2008-01-01	139675637378.9390000
2008-04-01	171689321199.7370000
2008-07-01	178936955058.1440000
2008-10-01	108446731959.6299900
2009-01-01	152869687175.5780000
2009-04-01	45544434009.4724960
2009-07-01	91501544350.7184900
2009-10-01	-25856883924.1942980
2010-01-01	76663896706.7952000
2010-04-01	204116148654.5749800
2010-07-01	68103078516.4314000
2010-10-01	-53968617117.9433000
2011-01-01	134632443095.8830100
2011-04-01	121233138969.3430000
2011-07-01	57350963457.5177000
2011-10-01	21629263278.2685000
2012-01-01	42436100278.8757000
2012-04-01	40025176625.5635000
2012-07-01	50171924075.3662000
2012-10-01	-18160719093.7317000
2013-01-01	106975258824.1469900
2013-04-01	-48825072485.1578000
2013-07-01	-3059206253.4492903
2013-10-01	62620649457.6510000
2014-01-01	-1630489402.1437302
2014-04-01	82910813379.9000100
2014-07-01	57360237472.4880000
2014-10-01	42285413769.7421950
2015-01-01	61681638898.1533050
2015-04-01	-18434143926.6675000
2015-07-01	61840023937.4956000
2015-10-01	-57733778755.3176040
2016-01-01	-74495305271.8556000
2016-04-01	-74458536726.5347000
2016-07-01	23039347558.3867000
2016-10-01	21271400200.1849980
2017-01-01	31302703623.3750000
2017-04-01	22036244176.8641970
2017-07-01	119144147134.4520000
2017-10-01	54932892655.2812000
2018-01-01	-46576965497.8209000
2018-04-01	34909495261.4262000