Quarter	US Dollars, sum over component sub-periods
1993-01-01	63028115.0577259960
1993-04-01	106761142.8701910000
1993-07-01	82370966.2658201000
1993-10-01	96422167.6166898000
1994-01-01	9984777.3748273000
1994-04-01	53642796.8507286000
1994-07-01	81287003.2362314000
1994-10-01	57243658.5500332040
1995-01-01	5020158.1721139800
1995-04-01	54488323.8371578000
1995-07-01	103400054.1237130000
1995-10-01	71570488.1642582900
1996-01-01	4528554.5670693200
1996-04-01	103122006.2231840000
1996-07-01	12669840.5569313990
1996-10-01	92166477.9449524000
1997-01-01	109219680.2255950000
1997-04-01	188517380.1149360000
1997-07-01	245821021.1717830000
1997-10-01	300767620.5693580000
1998-01-01	76019788.3645220000
1998-04-01	122389049.0729399900
1998-07-01	-13534353.3744295000
1998-10-01	28471894.1238404000
1999-01-01	346029496.7294530000
1999-04-01	56047901.1956407950
1999-07-01	25687519.2622974000
1999-10-01	56814264.5854282000
2000-01-01	-25288871.2196951000
2000-04-01	215219872.5982270000
2000-07-01	137913710.1624950000
2000-10-01	37807575.6551643000
2001-01-01	220435780.0014010000
2001-04-01	257698911.6632689800
2001-07-01	2313335.4184156996
2001-10-01	64319503.0572713000
2002-01-01	173851111.0767080200
2002-04-01	86922665.9440608000
2002-07-01	-3343157.5327815600
2002-10-01	128846389.2956679900
2003-01-01	337997558.3137960000
2003-04-01	-45322940.9997953000
2003-07-01	273750642.6869930000
2003-10-01	428435131.5837860000
2004-01-01	312460016.0940670000
2004-04-01	573197765.0905470000
2004-07-01	341143988.8227580000
2004-10-01	765191218.6308700000
2005-01-01	1676398019.3774300000
2005-04-01	-41199798.6815725040
2005-07-01	726576214.2823449000
2005-10-01	696404436.8136400000
2006-01-01	885742842.6445429000
2006-04-01	558560254.5850270000
2006-07-01	708538269.2401991000
2006-10-01	1160385035.9052300000
2007-01-01	1060414082.8636700000
2007-04-01	1744236482.2974300000
2007-07-01	1430326404.8053200000
2007-10-01	1208808045.6768300000
2008-01-01	715353899.0619700000
2008-04-01	375990967.0904920000
2008-07-01	261495951.5605319700
2008-10-01	106203697.9452020000
2009-01-01	-686743441.5497650000
2009-04-01	-148234386.2150609800
2009-07-01	335743901.1412549600
2009-10-01	1507728320.2119200000
2010-01-01	73661248.7575134000
2010-04-01	428346437.3159660000
2010-07-01	343127759.4689230000
2010-10-01	734434926.9907780000
2011-01-01	96526119.6918638000
2011-04-01	1180223682.9807801000
2011-07-01	-1045559474.9715000000
2011-10-01	-79088133.3096140900
2012-01-01	736488352.0031180000
2012-04-01	968689521.8743420000
2012-07-01	908103170.0895870000
2012-10-01	1076787632.0189900000
2013-01-01	-511436144.3108310000
2013-04-01	844465974.3216300000
2013-07-01	70204136.2646870900
2013-10-01	938487892.6146550000
2014-01-01	1644042699.5950900000
2014-04-01	815761232.5648190000
2014-07-01	565571278.3753180000
2014-10-01	568007662.1072380000
2015-01-01	57524780.6336855000
2015-04-01	-75764270.0088524000
2015-07-01	-253244673.5746520200
2015-10-01	669148250.2285470000
2016-01-01	-413079812.6022360300
2016-04-01	876046871.5174060000
2016-07-01	290238343.2844410000
2016-10-01	409130243.9014380000
2017-01-01	716800260.5720910000
2017-04-01	459376832.0537060000
2017-07-01	925850939.3108120000
2017-10-01	822613767.6729480000
2018-01-01	-328970538.2306520000
2018-04-01	1203119463.8708500000