Quarter	US Dollars, sum over component sub-periods
1993-01-01	20451247.9599073000
1993-04-01	54833103.9911524000
1993-07-01	21553930.3524423000
1993-10-01	48036616.6775547000
1994-01-01	-4878925.3081542505
1994-04-01	47878548.9435232000
1994-07-01	68887290.8781622000
1994-10-01	34876931.0371063050
1995-01-01	-16381568.7721614020
1995-04-01	15408009.3112785000
1995-07-01	41797115.6695591960
1995-10-01	57970721.6992649000
1996-01-01	-37826749.9131673000
1996-04-01	32531006.9507051970
1996-07-01	-8359482.4293155605
1996-10-01	21190630.6632439000
1997-01-01	42630907.4428934000
1997-04-01	111900080.2620450000
1997-07-01	26303173.9959239000
1997-10-01	153280091.0753470000
1998-01-01	167845671.3394890000
1998-04-01	-27488449.5244036000
1998-07-01	72331134.4272791000
1998-10-01	-44119670.6464468000
1999-01-01	330862619.4377400000
1999-04-01	3489774.9801059403
1999-07-01	-58924023.7771884050
1999-10-01	-141256672.4610279800
2000-01-01	47811772.1497360000
2000-04-01	170736737.8362839800
2000-07-01	61717290.2433212000
2000-10-01	-113248899.0314460000
2001-01-01	311121970.1821199700
2001-04-01	89159806.4412733000
2001-07-01	-68154420.4040934000
2001-10-01	-111976850.7264470000
2002-01-01	39451840.6376797000
2002-04-01	39285006.3612017000
2002-07-01	-174630817.0064720000
2002-10-01	45216279.4733243960
2003-01-01	268122547.0523539800
2003-04-01	-206168265.4501970000
2003-07-01	-1124694.5056984099
2003-10-01	93556728.2343061100
2004-01-01	161483539.1422900000
2004-04-01	376187391.7621800300
2004-07-01	-174481954.1686599900
2004-10-01	586098401.6793560000
2005-01-01	988823135.7650870000
2005-04-01	-448914014.3805590000
2005-07-01	160417683.3078050000
2005-10-01	244425468.4290399800
2006-01-01	365050180.2588520000
2006-04-01	-140017129.5246900000
2006-07-01	-614091991.5810901000
2006-10-01	419518859.0065400000
2007-01-01	402650744.6731800000
2007-04-01	715915947.6096390000
2007-07-01	24049492.7787213030
2007-10-01	978724481.4271799000
2008-01-01	236104239.7741710000
2008-04-01	-83449366.7607326000
2008-07-01	-108293268.8541890000
2008-10-01	411145008.8769710000
2009-01-01	-661212008.5938181000
2009-04-01	-804195366.1694930000
2009-07-01	714957.2000452620
2009-10-01	406506978.4486630000
2010-01-01	40292149.2263842000
2010-04-01	-263519542.1967579700
2010-07-01	736878809.0062760000
2010-10-01	562178530.7491430000
2011-01-01	-269480144.3522150000
2011-04-01	1195192373.5941901000
2011-07-01	1430602106.7402000000
2011-10-01	465232239.0427560000
2012-01-01	359851146.3491020000
2012-04-01	664258899.0348280000
2012-07-01	331106653.9971130500
2012-10-01	689652823.4963111000
2013-01-01	-850678230.7461110000
2013-04-01	798886230.2699361000
2013-07-01	-266510796.5368880000
2013-10-01	-3811118.3456432700
2014-01-01	1162451665.3855900000
2014-04-01	158928772.6580310000
2014-07-01	16953893.1222578000
2014-10-01	305418057.0486490000
2015-01-01	172799487.8135170000
2015-04-01	775671278.2074190000
2015-07-01	-1003084587.2098701000
2015-10-01	540133403.6186601000
2016-01-01	-978694966.8911040000
2016-04-01	-349492790.3256470000
2016-07-01	-548674330.6149930000
2016-10-01	1400761.9622646000
2017-01-01	-330855479.2740220000
2017-04-01	-693519344.7284340000
2017-07-01	-190502375.1823080000
2017-10-01	422728804.1720419500
2018-01-01	-753670642.8720900000
2018-04-01	1010858591.1295100000