Quarter	US Dollars, sum over component sub-periods
2000-01-01	304832987.300000000
2000-04-01	173673065.200000000
2000-07-01	359828359.100000000
2000-10-01	11346234.989999998
2001-01-01	-429734178.900000040
2001-04-01	-409258740.700000000
2001-07-01	-197823984.300000000
2001-10-01	-191407213.700000000
2002-01-01	-92865756.480000000
2002-04-01	-261340770.299999980
2002-07-01	-386415499.300000000
2002-10-01	-425117259.800000000
2003-01-01	-690041035.699999900
2003-04-01	-81484577.160000000
2003-07-01	40426879.850000000
2003-10-01	-109475329.900000000
2004-01-01	-445575389.900000000
2004-04-01	-1673710.149000000
2004-07-01	77508488.270000000
2004-10-01	-345390032.000000000
2005-01-01	-335138153.400000040
2005-04-01	-198922407.000000000
2005-07-01	-693962235.699999900
2005-10-01	-279227809.700000050
2006-01-01	-643762225.300000000
2006-04-01	-614645768.000000000
2006-07-01	-528782612.599999960
2006-10-01	-1076422564.000000000
2007-01-01	-1819062031.000000000
2007-04-01	-1310698425.000000000
2007-07-01	-1555267756.000000000
2007-10-01	-969555287.700000000
2008-01-01	-1555955101.000000000
2008-04-01	-1269518493.000000000
2008-07-01	-1525708293.000000000
2008-10-01	-2570570395.000000000
2009-01-01	-750291474.099999900
2009-04-01	-1176889922.000000000
2009-07-01	-1545241745.000000000
2009-10-01	-1505405853.000000000
2010-01-01	-1019319127.000000000
2010-04-01	-1425618843.000000000
2010-07-01	-3587601526.000000000
2010-10-01	-3299050179.000000000
2011-01-01	-1411137113.000000000
2011-04-01	-1575532062.000000000
2011-07-01	-2551858725.000000000
2011-10-01	-3168522106.000000000
2012-01-01	-1549317489.000000000
2012-04-01	-3192981922.000000000
2012-07-01	-3520233271.000000000
2012-10-01	-3289704611.000000000
2013-01-01	-3094644229.000000000
2013-04-01	-1892479531.000000000
2013-07-01	-3429153822.000000000
2013-10-01	-3322304597.000000000
2014-01-01	-4158143038.999999500
2014-04-01	-3943569608.000000000
2014-07-01	-4995126164.000000000
2014-10-01	-6195119337.000000000
2015-01-01	-5183732374.000000000
2015-04-01	-4347651432.000000000
2015-07-01	-4977731574.000000000
2015-10-01	-3741229895.000000000
2016-01-01	-3623411434.000000000
2016-04-01	-2852935764.000000000
2016-07-01	-3422468637.000000000
2016-10-01	-2376635141.000000000
2017-01-01	-3283858040.000000000
2017-04-01	-2196579142.000000000
2017-07-01	-2627996592.000000000
2017-10-01	-1698236684.000000000
2018-01-01	-2517601630.000000000
2018-04-01	-3032458638.000000000