Quarter	US Dollars, sum over component sub-periods
2005-01-01	33843528689.806200000
2005-04-01	16535736764.743200000
2005-07-01	10029208661.134300000
2005-10-01	5122363976.520410000
2006-01-01	11799445849.242400000
2006-04-01	9332374141.216880000
2006-07-01	21944756275.355602000
2006-10-01	6402447180.331770000
2007-01-01	29172489891.360000000
2007-04-01	20188161806.054600000
2007-07-01	23934126766.641900000
2007-10-01	19245366972.559600000
2008-01-01	14303140120.256199000
2008-04-01	35873778505.856200000
2008-07-01	-6762627283.035590000
2008-10-01	4073251053.099840000
2009-01-01	17558332451.592400000
2009-04-01	1087769434.860040000
2009-07-01	4255270469.456530000
2009-10-01	-892161928.827566000
2010-01-01	32798620166.868298000
2010-04-01	2399723764.293160000
2010-07-01	14148062655.442400000
2010-10-01	-24605523602.426098000
2011-01-01	10846072293.090700000
2011-04-01	-15139810120.887100000
2011-07-01	9817412467.764770000
2011-10-01	7509847072.514560000
2012-01-01	22338624523.164100000
2012-04-01	14560669073.440500000
2012-07-01	-3348365782.930990000
2012-10-01	-23127595071.431300000
2013-01-01	24979336733.563103000
2013-04-01	-15522524431.476400000
2013-07-01	-31608916.772051897
2013-10-01	11861868220.854800000
2014-01-01	7431702936.367630000
2014-04-01	-5888233480.365120000
2014-07-01	6172931437.711420000
2014-10-01	13884183949.335701000
2015-01-01	39517099440.791306000
2015-04-01	-22038802991.831900000
2015-07-01	-6854140984.123900000
2015-10-01	-12849291108.068700000
2016-01-01	29893717562.930897000
2016-04-01	7543221549.695291000
2016-07-01	7031712446.178470000
2016-10-01	-1240554240.793060000
2017-01-01	31594584707.906498000
2017-04-01	-10041677838.438400000
2017-07-01	10190909174.589700000
2017-10-01	20590319423.678800000
2018-01-01	-6190195215.380390000
2018-04-01	-4989517775.933050000
2018-07-01	5594335648.571771000