Quarter	US Dollars, sum over component sub-periods
2004-01-01	15884814.525315900
2004-04-01	17354387.436745297
2004-07-01	63771816.770687400
2004-10-01	73178656.231127110
2005-01-01	44652804.547875900
2005-04-01	39480993.671372500
2005-07-01	66284970.840270900
2005-10-01	110681924.735170000
2006-01-01	71673610.049644500
2006-04-01	62600268.893454300
2006-07-01	108310629.987950000
2006-10-01	224392474.613636020
2007-01-01	86508965.308559200
2007-04-01	142726695.060507000
2007-07-01	196752345.464847000
2007-10-01	446807382.456976000
2008-01-01	108689569.193808000
2008-04-01	170102019.483537970
2008-07-01	223519246.257997000
2008-10-01	407672902.213261960
2009-01-01	195540157.471077000
2009-04-01	265234361.158478020
2009-07-01	768585933.025501000
2009-10-01	427653246.201120000
2010-01-01	274225936.228940000
2010-04-01	199533454.743540020
2010-07-01	308839280.294506970
2010-10-01	639753141.965188000
2011-01-01	203485874.619950000
2011-04-01	287153298.574151000
2011-07-01	383917183.600006000
2011-10-01	520490740.981842000
2012-01-01	218288245.685692000
2012-04-01	248999382.234845000
2012-07-01	315800304.093606000
2012-10-01	457672917.588765000
2013-01-01	216671991.473650000
2013-04-01	273510221.580265000
2013-07-01	398761649.295928000
2013-10-01	565463876.099671000
2014-01-01	250900240.654600000
2014-04-01	262088265.331007000
2014-07-01	338545094.221364000
2014-10-01	433120566.106889000
2015-01-01	178202989.712571980
2015-04-01	237490570.164975000
2015-07-01	394897159.557454000
2015-10-01	425705222.872299970
2016-01-01	48637172.172189700
2016-04-01	151710359.871569000
2016-07-01	187968661.769566000
2016-10-01	238969990.762341020
2017-01-01	79916782.433338500
2017-04-01	108657962.669155000
2017-07-01	118341672.770465000
2017-10-01	267473113.837546970
2018-01-01	78820210.392655900
2018-04-01	145089060.098484000