Quarter	US Dollars, sum over component sub-periods
2000-01-01	37570839553.187400
2000-04-01	35336866620.372200
2000-07-01	33925089910.605100
2000-10-01	37317103373.942200
2001-01-01	38518405521.675400
2001-04-01	35633369886.061600
2001-07-01	32394326294.370800
2001-10-01	34188925557.420902
2002-01-01	30701312619.371200
2002-04-01	33026485194.993000
2002-07-01	32911258784.481796
2002-10-01	36985563747.746600
2003-01-01	40098252936.012700
2003-04-01	40587790198.674900
2003-07-01	38139398658.836700
2003-10-01	44697131724.628296
2004-01-01	48386424181.541800
2004-04-01	48052925545.741005
2004-07-01	47432664161.150500
2004-10-01	54885418274.779200
2005-01-01	56660047973.607400
2005-04-01	56515699708.461300
2005-07-01	52923655931.209000
2005-10-01	58054772731.732600
2006-01-01	61280658351.332400
2006-04-01	61289359779.193200
2006-07-01	58378491360.755394
2006-10-01	63336092407.735100
2007-01-01	67157030509.150000
2007-04-01	69029987468.321800
2007-07-01	68504822679.625404
2007-10-01	79933660706.681900
2008-01-01	83568513133.760390
2008-04-01	91503800974.915000
2008-07-01	86197806843.808900
2008-10-01	67999802042.577995
2009-01-01	56974682571.129500
2009-04-01	57383130591.051796
2009-07-01	60936051201.254400
2009-10-01	70815777815.665800
2010-01-01	68421812143.556110
2010-04-01	66111275829.728000
2010-07-01	65467554337.184300
2010-10-01	76205397092.222700
2011-01-01	84259372583.147100
2011-04-01	88816150035.826690
2011-07-01	83204225173.694000
2011-10-01	81004033234.082100
2012-01-01	83607689447.305600
2012-04-01	78096585347.722090
2012-07-01	72028836397.308410
2012-10-01	79756519134.297600
2013-01-01	82713844536.297090
2013-04-01	78551268932.181810
2013-07-01	77149047329.512700
2013-10-01	83074213252.853990
2014-01-01	83957735761.832800
2014-04-01	81862716125.209500
2014-07-01	78264733648.522700
2014-10-01	73837250145.195400
2015-01-01	65931729004.964600
2015-04-01	65401708757.568695
2015-07-01	61045529040.084800
2015-10-01	62577124836.581700
2016-01-01	63984387728.449400
2016-04-01	71867913239.048400
2016-07-01	70083465545.261900
2016-10-01	68767714764.376200
2017-01-01	74466457871.384800
2017-04-01	74674854911.291900
2017-07-01	74228980356.948700
2017-10-01	80517473260.390000
2018-01-01	88917897776.448400
2018-04-01	84773465114.686000