Quarter	US Dollars, sum over component sub-periods
2000-01-01	18556608938.1196000
2000-04-01	8102670155.6451000
2000-07-01	6501795342.0519700
2000-10-01	10562019672.0210000
2001-01-01	7061236329.5698100
2001-04-01	13426667495.4194010
2001-07-01	3036358388.4998200
2001-10-01	10811723814.3328000
2002-01-01	7220068812.8588900
2002-04-01	13059122824.9370000
2002-07-01	2660694119.9519600
2002-10-01	13021140984.9583990
2003-01-01	12836661516.4774000
2003-04-01	7299847351.7529200
2003-07-01	1313183008.5904500
2003-10-01	4694314025.0085600
2004-01-01	11071380923.2907000
2004-04-01	22207011382.5294000
2004-07-01	16486263656.9907990
2004-10-01	20635124750.8890000
2005-01-01	18468960267.4519000
2005-04-01	13257969990.7392000
2005-07-01	14562982445.7599010
2005-10-01	33550866383.3234020
2006-01-01	13956004535.8051990
2006-04-01	14780551934.0352000
2006-07-01	20642203093.2166020
2006-10-01	21907955804.2958030
2007-01-01	14292428707.6541000
2007-04-01	10346485080.4265000
2007-07-01	-3689044917.2751800
2007-10-01	11052641989.7719000
2008-01-01	-6805387792.8778800
2008-04-01	23203811840.1363000
2008-07-01	21457936992.7656970
2008-10-01	-46453853371.8395000
2009-01-01	-28339904977.3884000
2009-04-01	33724304206.4206000
2009-07-01	5468556415.1251300
2009-10-01	-4087631941.3260200
2010-01-01	14472683369.1644000
2010-04-01	39049417642.9321000
2010-07-01	34272783728.9745000
2010-10-01	21303307226.5609000
2011-01-01	-547986299.2256480
2011-04-01	53594277746.2012000
2011-07-01	12315694894.0004000
2011-10-01	-32895685992.2056050
2012-01-01	-4428079808.8405000
2012-04-01	22225353086.7211000
2012-07-01	22631620795.3020000
2012-10-01	32467849159.8032000
2013-01-01	12452749894.2596990
2013-04-01	36454964533.0263000
2013-07-01	43978796878.8273000
2013-10-01	21376137820.0188980
2014-01-01	21239430440.6445000
2014-04-01	8749778213.4611200
2014-07-01	3317934004.2052298
2014-10-01	14037018936.3871000
2015-01-01	1618307109.4049401
2015-04-01	18697423192.1188000
2015-07-01	18545765412.3225980
2015-10-01	1301482885.7964200
2016-01-01	8960325866.8309500
2016-04-01	-4703704597.0031805
2016-07-01	37489023616.7726060
2016-10-01	33549713040.2511020
2017-01-01	11576832163.9734000
2017-04-01	25666615845.6570000
2017-07-01	-984320547.0123490
2017-10-01	926509813.7158370
2018-01-01	27003153499.2158000
2018-04-01	10155416677.7125000