Quarter	US Dollars, sum over component sub-periods
2000-01-01	8324243.652354250
2000-04-01	11661570.799289599
2000-07-01	8051764.320445971
2000-10-01	7917856.223234500
2001-01-01	12495976.290901000
2001-04-01	13302283.910805100
2001-07-01	5580762.308692169
2001-10-01	8933949.150795730
2002-01-01	6585357.626780060
2002-04-01	4485982.980383189
2002-07-01	4656901.161488900
2002-10-01	5836273.045584859
2003-01-01	12020592.929722201
2003-04-01	19624544.506451700
2003-07-01	19582395.078910198
2003-10-01	22834787.006234400
2004-01-01	27415883.593383700
2004-04-01	23097447.498382300
2004-07-01	69648405.207219390
2004-10-01	25194860.376314000
2005-01-01	53859745.819526404
2005-04-01	28996338.197850900
2005-07-01	81797107.087655110
2005-10-01	48778293.642514500
2006-01-01	66128341.700412800
2006-04-01	63986320.731680304
2006-07-01	44618429.178905600
2006-10-01	60538434.867796600
2007-01-01	110106688.190112000
2007-04-01	51207756.613180205
2007-07-01	39802075.259616800
2007-10-01	375002546.469995000
2008-01-01	80799267.632246100
2008-04-01	250145276.689946000
2008-07-01	73131017.196775110
2008-10-01	96232384.641119100
2009-01-01	183078632.951551000
2009-04-01	173833646.456092980
2009-07-01	112879200.312916000
2009-10-01	153747614.589128020
2010-01-01	191144958.625358000
2010-04-01	80337459.803763000
2010-07-01	124826638.212553000
2010-10-01	74732654.493031010
2011-01-01	6823781.475294820
2011-04-01	30218845.207964398
2011-07-01	456874463.959009950
2011-10-01	112793984.570362000
2012-01-01	1310549.477840850
2012-04-01	113099820.802973000
2012-07-01	479866173.521918000
2012-10-01	233403542.343518020
2013-01-01	165111828.101324000
2013-04-01	163209995.032323000
2013-07-01	239787981.215738980
2013-10-01	191772733.914090000
2014-01-01	172682044.138864000
2014-04-01	423718643.238407970
2014-07-01	198678435.026458000
2014-10-01	208523366.832070000
2015-01-01	207134239.463760000
2015-04-01	279830077.550944000
2015-07-01	156749337.023819000
2015-10-01	105050256.781586990
2016-01-01	110213397.172422000
2016-04-01	71140697.222991200
2016-07-01	5579360.693664771
2016-10-01	88355754.542844000
2017-01-01	1065557.099111180
2017-04-01	128673903.160842000
2017-07-01	43456152.168590695
2017-10-01	69473536.061700400
2018-01-01	29493062.822322097
2018-04-01	132224020.286795990