Quarter	US Dollars, sum over component sub-periods
2002-01-01	18409216.0643822000
2002-04-01	35864967.4663142000
2002-07-01	46233349.1607331000
2002-10-01	553258244.2931880000
2003-01-01	46161514.1424434000
2003-04-01	5679457.7143065900
2003-07-01	25890111.5094857000
2003-10-01	525936801.2811760300
2004-01-01	42505094.2958163000
2004-04-01	1205246.2150735902
2004-07-01	110040954.0240280000
2004-10-01	515570116.0120780000
2005-01-01	98284415.0820726000
2005-04-01	15102131.4478328000
2005-07-01	29268021.4745682000
2005-10-01	237871878.2414600000
2006-01-01	111869481.2495620000
2006-04-01	30165241.0890377000
2006-07-01	6372724.6624437700
2006-10-01	206384640.4631559800
2007-01-01	90466956.2297590100
2007-04-01	24265416.5790429970
2007-07-01	15123630.7299347990
2007-10-01	37675848.9245083000
2008-01-01	71913957.4108624900
2008-04-01	106219950.2602340000
2008-07-01	0.0000000000
2008-10-01	18387199.0071674000
2009-01-01	15612710.1654118990
2009-04-01	16341874.5305224000
2009-07-01	7152118.6855932400
2009-10-01	63497340.1883733000
2010-01-01	62269577.8517984000
2010-04-01	2541372.9464799003
2010-07-01	16800469.9432152030
2010-10-01	28503728.6074501000
2011-01-01	32813411.7932682000
2011-04-01	2878594.3487336100
2011-07-01	4235892.5387096500
2011-10-01	277549496.7935350000
2012-01-01	79996063.8749826000
2012-04-01	1282353.0869398200
2012-07-01	6256739.4935206500
2012-10-01	24658268.0587691000
2013-01-01	69933218.9073118000
2013-04-01	20896157.7314353000
2013-07-01	1324606.3446167400
2013-10-01	46277865.6256682950
2014-01-01	47967234.4830177000
2014-04-01	12341319.7059731000
2014-07-01	101988263.3135820000
2014-10-01	17481000.8122694000
2015-01-01	39400534.6806065000
2015-04-01	13272572.8482660990
2015-07-01	5558487.1285042300
2015-10-01	9848461.5732737900
2016-01-01	29757617.2365538000
2016-04-01	50814783.7307080000
2016-07-01	619309036.9967890000
2016-10-01	1077509.2017420000
2017-01-01	-4262228.3964447200
2017-04-01	-3299330.8502779900
2017-07-01	1174490.5991511000
2017-10-01	-5887587.8018390200
2018-04-01	5956036.9498556900