Quarter	US Dollars, sum over component sub-periods
1999-01-01	-1028214110.5597700
1999-04-01	-1334358487.7043300
1999-07-01	-1259345209.9632300
1999-10-01	-2522163147.2596300
2000-01-01	-1356501255.9572100
2000-04-01	-1032125971.2631600
2000-07-01	-1869269209.8507700
2000-10-01	-2656371553.4729900
2001-01-01	-1164383767.4106800
2001-04-01	-1199214231.4901900
2001-07-01	-4248849803.0203900
2001-10-01	-2201726859.1816400
2002-01-01	-716206167.8381080
2002-04-01	-1807778283.2123200
2002-07-01	-1870286526.7936600
2002-10-01	-5194424601.0311600
2003-01-01	-1897560288.3298400
2003-04-01	-2722277671.6214400
2003-07-01	-1672388637.8105602
2003-10-01	4162397114.3929500
2004-01-01	-1859847905.4084100
2004-04-01	-2076759753.1933002
2004-07-01	-2037469397.6182200
2004-10-01	-3647723340.9005300
2005-01-01	-4015377016.7063800
2005-04-01	-2179615121.2084603
2005-07-01	-3044483983.8024800
2005-10-01	-5590345946.4916790
2006-01-01	-3537962561.8409800
2006-04-01	-6348149298.6834500
2006-07-01	-1140590260.0841901
2006-10-01	-4338979084.9372810
2007-01-01	-2803033416.2840800
2007-04-01	-2748732466.9260400
2007-07-01	-2404657286.0596400
2007-10-01	-4761937489.8353600
2008-01-01	-3805896375.2252900
2008-04-01	-4066974448.4933000
2008-07-01	-4015536617.9638900
2008-10-01	-5072108846.1271200
2009-01-01	-3066076064.6508102
2009-04-01	-3183805705.4090200
2009-07-01	-2820080397.7294097
2009-10-01	-7419885703.3609200
2010-01-01	-3228193292.6769000
2010-04-01	-3407218709.3456000
2010-07-01	-4573604856.0798900
2010-10-01	-8755531035.9627290
2011-01-01	-3330834742.1150002
2011-04-01	-4323936571.2327500
2011-07-01	-4330070549.4869590
2011-10-01	-7636518412.0197900
2012-01-01	-3332426195.2904600
2012-04-01	-3286670961.8267600
2012-07-01	-3890065212.7015300
2012-10-01	-8860753956.3813700
2013-01-01	-2977703681.2854800
2013-04-01	-3773846086.2972200
2013-07-01	-1068295016.9333999
2013-10-01	-8083926456.5873200
2014-01-01	-3562457980.4330300
2014-04-01	-6864516272.0112300
2014-07-01	-3065873157.0382900
2014-10-01	-6649522980.4042300
2015-01-01	-2829971546.6736200
2015-04-01	-5232822450.2026500
2015-07-01	-2893859568.8418700
2015-10-01	-6710851143.3795700
2016-01-01	-3212830740.9732600
2016-04-01	-4619967215.0543500
2016-07-01	-1503191358.0871600
2016-10-01	-5594535526.3646390
2017-01-01	-2843119451.8484497
2017-04-01	-4274942982.7051997
2017-07-01	-2578476661.3763300
2017-10-01	-5178839982.2536400
2018-01-01	-3006080428.1651797
2018-04-01	-4035334154.2662200