Quarter	US Dollars, sum over component sub-periods
1999-01-01	115649184265.080000
1999-04-01	-29771761705.140800
1999-07-01	-116440275904.712000
1999-10-01	57438214806.987800
2000-01-01	350784381167.623960
2000-04-01	28106798443.172897
2000-07-01	82404327794.742310
2000-10-01	250273386130.928000
2001-01-01	524587173383.824000
2001-04-01	-56190389588.364105
2001-07-01	-153198936620.711980
2001-10-01	98735704770.791800
2002-01-01	3752002069.012240
2002-04-01	65894958674.621900
2002-07-01	81913674804.406510
2002-10-01	212398872644.532000
2003-01-01	328283792689.101000
2003-04-01	230452112319.932000
2003-07-01	-46878340445.196594
2003-10-01	76734556005.822390
2004-01-01	669761306552.914000
2004-04-01	168808809569.202030
2004-07-01	258832382235.453980
2004-10-01	439252756703.828000
2005-01-01	560920974192.780000
2005-04-01	523023935653.701000
2005-07-01	374671078933.967000
2005-10-01	277850571021.984000
2006-01-01	918847994245.648100
2006-04-01	259229945461.419980
2006-07-01	332680423020.279000
2006-10-01	343331702135.452000
2007-01-01	1293085710795.090000
2007-04-01	950935795801.606900
2007-07-01	439943846578.545960
2007-10-01	488209408299.865050
2008-01-01	994299100124.533100
2008-04-01	-977058348241.474000
2008-07-01	-12963683559.101000
2008-10-01	-1335815115509.990000
2009-01-01	-697053642164.268000
2009-04-01	-344364424776.062000
2009-07-01	-190890913819.608000
2009-10-01	-237018555047.044980
2010-01-01	499998278837.037960
2010-04-01	359777443919.302000
2010-07-01	501841146094.884030
2010-10-01	-34153105849.114605
2011-01-01	443933640256.887000
2011-04-01	-84348472547.654300
2011-07-01	624008231248.768100
2011-10-01	-380186373785.125000
2012-01-01	166992942617.771030
2012-04-01	-286918637983.352000
2012-07-01	-160000073343.861000
2012-10-01	-253501802846.584000
2013-01-01	11553314734.764301
2013-04-01	-59624584357.532400
2013-07-01	-393734009808.876040
2013-10-01	-263443729779.500980
2014-01-01	284199017105.914000
2014-04-01	68374161525.461100
2014-07-01	263624276769.171000
2014-10-01	-256173122629.155000
2015-01-01	364763198214.177000
2015-04-01	-487385896765.784000
2015-07-01	-28171242362.569500
2015-10-01	-380092108777.944000
2016-01-01	178914934136.213000
2016-04-01	714086768290.753900
2016-07-01	35351378852.784996
2016-10-01	-109389060170.031000
2017-01-01	448461774238.634950
2017-04-01	26718830185.697600
2017-07-01	273142443465.661000
2017-10-01	75933465995.957900
2018-01-01	494891522842.589000