Quarter	US Dollars, sum over component sub-periods
2000-01-01	60292593.779999994
2000-04-01	-68350266.509999990
2000-07-01	-100924596.100000010
2000-10-01	-361772131.600000000
2001-01-01	59175512.920000000
2001-04-01	-258225449.900000000
2001-07-01	-79250003.050000000
2001-10-01	-81411924.160000000
2002-01-01	-296840983.700000000
2002-04-01	-363254102.300000000
2002-07-01	19373734.730000000
2002-10-01	50348065.510000000
2003-01-01	-137317014.000000000
2003-04-01	-177442966.399999980
2003-07-01	-185221980.300000000
2003-10-01	-124448881.700000000
2004-01-01	-28985387.889999997
2004-04-01	-383422080.400000040
2004-07-01	-360073803.800000000
2004-10-01	-27836182.139999997
2005-01-01	-209900871.400000000
2005-04-01	-135189333.100000000
2005-07-01	-232093220.300000000
2005-10-01	-581145171.200000000
2006-01-01	330084212.700000050
2006-04-01	-239922479.700000000
2006-07-01	-632789633.300000000
2006-10-01	-61894708.570000000
2007-01-01	65939284.930000000
2007-04-01	-126592239.800000000
2007-07-01	-415066219.000000000
2007-10-01	-759309270.900000000
2008-01-01	-399372647.700000000
2008-04-01	-1014336280.000000000
2008-07-01	-750167144.900000100
2008-10-01	-827718667.500000000
2009-01-01	87230201.289999990
2009-04-01	101920207.500000000
2009-07-01	67381569.970000000
2009-10-01	-631112052.100000000
2010-01-01	65818356.100000000
2010-04-01	-311866375.700000000
2010-07-01	-451579993.800000000
2010-10-01	-944344992.000000000
2011-01-01	-330086151.000000000
2011-04-01	-267941090.200000020
2011-07-01	-960408408.400000000
2011-10-01	-1314201568.000000000
2012-01-01	-331450113.700000000
2012-04-01	-519564078.799999950
2012-07-01	-470890873.800000000
2012-10-01	-712270309.500000000
2013-01-01	-596505911.000000000
2013-04-01	-566715812.500000000
2013-07-01	-599869859.500000000
2013-10-01	-1321716159.000000000
2014-01-01	-823463705.900000100
2014-04-01	-790217662.300000100
2014-07-01	-623523901.300000100
2014-10-01	-752451842.800000000
2015-01-01	-537835537.100000000
2015-04-01	-335215562.600000000
2015-07-01	-915885460.699999900
2015-10-01	-1003405115.000000000
2016-01-01	-167888685.100000000
2016-04-01	-325080481.799999950
2016-07-01	-514638785.800000100
2016-10-01	-567073954.200000000
2017-01-01	-429592139.200000050
2017-04-01	-507060793.900000040
2017-07-01	-467915143.500000000
2017-10-01	-559883157.500000000
2018-01-01	-255880412.900000000
2018-04-01	-454632971.800000000