Quarter	US Dollars, sum over component sub-periods
2008-01-01	2058537030.885940000
2008-04-01	1188726208.059380000
2008-07-01	1298575268.365779900
2008-10-01	1192541192.750570000
2009-01-01	601089341.368359000
2009-04-01	539281859.507238000
2009-07-01	858254242.271189000
2009-10-01	701424106.732031000
2010-01-01	193727575.538928000
2010-04-01	-27955102.411278900
2010-07-01	818053651.850402000
2010-10-01	1775375096.121179800
2011-01-01	437512157.243575040
2011-04-01	0.000000000
2011-07-01	1156398663.067730000
2011-10-01	2051980017.556089900
2012-01-01	1395341179.721010000
2012-04-01	24364708.651856598
2012-07-01	659460342.617076000
2012-10-01	996713151.007088000
2013-01-01	1524016374.300850000
2013-04-01	77054581.634667700
2013-07-01	2251830785.848460000
2013-10-01	402889653.682289000
2014-01-01	2048886158.631760000
2014-04-01	585527057.161166000
2014-07-01	-5298091.600705560
2014-10-01	973941473.826435900
2015-01-01	606768234.081340000
2015-04-01	206830926.885480020
2015-07-01	7781881.979905920
2015-10-01	1669861373.423980000
2016-01-01	824396210.849713900
2016-04-01	-3387652.248713870
2016-07-01	-25665059.190857900
2016-10-01	461173938.345576000
2017-01-01	277044845.768907000
2017-04-01	130873457.061027000
2017-07-01	24664302.582173100
2017-10-01	718285711.824360000
2018-01-01	217511338.314625980
2018-04-01	58369162.108585700