Quarter	US Dollars, sum over component sub-periods
1999-01-01	60990336278.8285000
1999-04-01	-173734726806.6740000
1999-07-01	-23861137360.7683030
1999-10-01	-75127860312.3041000
2000-01-01	-100947300003.7520000
2000-04-01	-4896708720.7601900
2000-07-01	5688058801.3407590
2000-10-01	-138399295016.9229700
2001-01-01	20225548349.6391000
2001-04-01	-46374518361.0249000
2001-07-01	-21712459316.2045000
2001-10-01	-99893340203.2228100
2002-01-01	-29044683557.1017000
2002-04-01	-130747809986.0179900
2002-07-01	-154194909788.5600000
2002-10-01	-147713977025.3370000
2003-01-01	-58525795120.0487000
2003-04-01	-156191581080.8170200
2003-07-01	-141738537387.2880000
2003-10-01	-180213011197.1170000
2004-01-01	-220764929992.4000000
2004-04-01	-231072375252.3790000
2004-07-01	-76769599688.1428000
2004-10-01	-184095563386.4260000
2005-01-01	-155951194527.2900000
2005-04-01	-141206347716.0570000
2005-07-01	-5318003318.3543600
2005-10-01	-261898725094.5180000
2006-01-01	-51219299652.7056050
2006-04-01	-124460570315.7260000
2006-07-01	-49913894529.3340000
2006-10-01	-249062507758.0309800
2007-01-01	-135970254874.2920000
2007-04-01	-300558554640.8459500
2007-07-01	3666759849.0574203
2007-10-01	-565510455392.2270000
2008-01-01	-215549598513.8040000
2008-04-01	-483596695169.7420000
2008-07-01	-342351153122.0940000
2008-10-01	-488971412230.9599600
2009-01-01	-30128622451.0538980
2009-04-01	-129621003166.4450000
2009-07-01	65842879431.3991900
2009-10-01	-238966917232.2200000
2010-01-01	-207760279154.0510000
2010-04-01	-317991657260.2350000
2010-07-01	-152916267012.9890000
2010-10-01	-44857725336.9042000
2011-01-01	-256707564001.0830000
2011-04-01	-278734381676.6960000
2011-07-01	-345314334349.4960000
2011-10-01	-193398557991.3780200
2012-01-01	-21095885858.5997000
2012-04-01	-152246448364.1150000
2012-07-01	138722585356.0680200
2012-10-01	-226947884619.0850000
2013-01-01	-150993957367.0430000
2013-04-01	13024073405.3755000
2013-07-01	-159057179905.1930200
2013-10-01	-196611963549.4700000
2014-01-01	-95431190506.8772000
2014-04-01	72999918215.8331000
2014-07-01	-102712249194.1660000
2014-10-01	102350780281.4530000
2015-01-01	118400905517.8200000
2015-04-01	-183767879872.2550000
2015-07-01	242994760437.2710000
2015-10-01	15703229367.0719000
2016-01-01	210581444916.6670200
2016-04-01	131198733800.7350000
2016-07-01	-131691526320.3530100
2016-10-01	-28987725583.5118980
2017-01-01	52917869294.9674000
2017-04-01	-21199923855.1442000
2017-07-01	-19914886298.7067000
2017-10-01	-89898974959.2742000
2018-01-01	184249855978.7260000