Quarter	US Dollars, sum over component sub-periods
1999-01-01	-2072143283.944700200
1999-04-01	-94050768.516421400
1999-07-01	73406748.852882300
1999-10-01	-100674797.450385990
2000-01-01	10859908.162685100
2000-04-01	-261486854.825990970
2000-07-01	-196099307.970808000
2000-10-01	-306059633.669109050
2001-01-01	-1761338044.363710000
2001-04-01	-713027406.656945000
2001-07-01	617764914.817181000
2001-10-01	-31348319.937904800
2002-01-01	95552597.667507800
2002-04-01	-632694810.687798000
2002-07-01	-1065334407.256890000
2002-10-01	-147068647.217176000
2003-01-01	-944700754.543028000
2003-04-01	40892095.543007500
2003-07-01	-205995235.053734000
2003-10-01	-915034842.048018900
2004-01-01	-670080310.075222000
2004-04-01	-791846763.303348000
2004-07-01	9781418.135469150
2004-10-01	-483185058.473630960
2005-01-01	174291029.412209000
2005-04-01	-771467214.793456100
2005-07-01	-48780035.790947000
2005-10-01	160563517.812986000
2006-01-01	833608069.956411000
2006-04-01	232523733.394666020
2006-07-01	-1363763077.762970000
2006-10-01	-403739952.906049000
2007-01-01	292378713.612120030
2007-04-01	21569259.181371600
2007-07-01	1318505624.546140200
2007-10-01	954937863.125038000
2008-01-01	-185777723.311395000
2008-04-01	251491352.822024000
2008-07-01	-719764582.927915900
2008-10-01	-195692332.290567000
2009-01-01	-2187080482.338120000
2009-04-01	-484808944.405497000
2009-07-01	2041214672.868310000
2009-10-01	-364740535.500656000
2010-01-01	181273659.968569000
2010-04-01	423138595.588903000
2010-07-01	507891129.821813050
2010-10-01	323042257.551100970
2011-01-01	747872343.788237000
2011-04-01	223091062.026853980
2011-07-01	80481958.235483300
2011-10-01	-53893106.173502000
2012-01-01	288510394.303216000
2012-04-01	519353000.210628030
2012-07-01	336612584.751411000
2012-10-01	53209946.863659605
2013-01-01	-248065002.916502000
2013-04-01	338256553.277609000
2013-07-01	238429142.031012980
2013-10-01	197361485.756526000
2014-01-01	38373787.586414200
2014-04-01	1478215849.226550000
2014-07-01	1568235113.808850000
2014-10-01	-201031509.341098000
2015-01-01	-441285988.422793030
2015-04-01	472282383.850803000
2015-07-01	-259025500.188296970
2015-10-01	-121464359.403710010
2016-01-01	590743808.844180000
2016-04-01	872885062.751940000
2016-07-01	-122745935.260625000
2016-10-01	-805976882.903016000
2017-01-01	12786685.189334200
2017-04-01	-2340325349.797190000
2017-07-01	-1488079589.124440000
2017-10-01	320284776.420043000
2018-01-01	3550227437.237029600
2018-04-01	-270404077.523448000