Quarter	US Dollars, sum over component sub-periods
2002-01-01	391853313.370421950
2002-04-01	666720549.053276100
2002-07-01	146569553.722324000
2002-10-01	312145700.216048000
2003-01-01	271601466.931120000
2003-04-01	230585983.200848000
2003-07-01	384974701.575831000
2003-10-01	525936801.281176030
2004-01-01	1238898483.739820000
2004-04-01	96419697.205887200
2004-07-01	802076287.108470000
2004-10-01	853670116.713465900
2005-01-01	1062782141.754139900
2005-04-01	297008585.140710950
2005-07-01	363411266.642555950
2005-10-01	834930292.627526000
2006-01-01	887738464.109425000
2006-04-01	967801484.939960000
2006-07-01	709921527.396236000
2006-10-01	1258946306.825250100
2007-01-01	2513408044.818090000
2007-04-01	566193053.511004000
2007-07-01	239228340.637151000
2007-10-01	2638758495.828060000
2008-01-01	2121461743.620439800
2008-04-01	1199660614.703810200
2008-07-01	1289578211.079180000
2008-10-01	1376413182.822240000
2009-01-01	623207347.436026000
2009-04-01	574689254.323370100
2009-07-01	885432293.276443000
2009-10-01	732434435.661235900
2010-01-01	206181491.109288000
2010-04-01	-15248237.678879400
2010-07-01	818053651.850402000
2010-10-01	1768588494.071780000
2011-01-01	426574353.312486000
2011-04-01	-2878594.348733610
2011-07-01	1187461875.018269800
2011-10-01	2047938034.593070000
2012-01-01	1382227070.889040000
2012-04-01	19235296.304097300
2012-07-01	644444167.832627000
2012-10-01	965565865.038116100
2013-01-01	1442207703.126260000
2013-04-01	20896157.731435300
2013-07-01	2217391020.888420000
2013-10-01	351167333.277130000
2014-01-01	2003659908.976339800
2014-04-01	521077943.141084000
2014-07-01	-70199713.709348600
2014-10-01	900271541.831872000
2015-01-01	540350189.905460000
2015-04-01	139362014.906794000
2015-07-01	-60031660.987845600
2015-10-01	1571376757.691240000
2016-01-01	759370306.517985000
2016-04-01	-48556348.898232100
2016-07-01	-36823780.578187406
2016-10-01	455786392.336866000
2017-01-01	250405918.291127000
2017-04-01	119875687.560100000
2017-07-01	10570415.392359900
2017-10-01	660587351.366338000
2018-01-01	231028992.108190000
2018-04-01	-4764829.559884550