Quarter	US Dollars, sum over component sub-periods
1996-01-01	11756037005.827800
1996-04-01	14907877971.050701
1996-07-01	13522257268.510900
1996-10-01	26141816042.784603
1997-01-01	31554032558.783203
1997-04-01	23212857576.874203
1997-07-01	33728694818.902397
1997-10-01	37269058015.706600
1998-01-01	31071697783.255300
1998-04-01	38321714559.992000
1998-07-01	15247108161.735300
1998-10-01	19260650828.439500
1999-01-01	33422138174.615997
1999-04-01	23803547624.482700
1999-07-01	25770431651.244900
1999-10-01	32365888734.692300
2000-01-01	40902557322.807300
2000-04-01	47957787717.142000
2000-07-01	23879002260.065400
2000-10-01	25545543465.768597
2001-01-01	23722820423.976997
2001-04-01	32003410467.399002
2001-07-01	17460890731.727800
2001-10-01	13864676759.503399
2002-01-01	37370109996.352196
2002-04-01	24803942713.709600
2002-07-01	20853152227.124500
2002-10-01	22972490830.738903
2003-01-01	35283291184.777800
2003-04-01	11553311669.219400
2003-07-01	38408921842.601204
2003-10-01	33163539817.800300
2004-01-01	39421617394.957695
2004-04-01	42199675012.657600
2004-07-01	43828021956.729400
2004-10-01	22880265251.206500
2005-01-01	48729339848.121090
2005-04-01	30292928046.831600
2005-07-01	36753310254.743600
2005-10-01	33307451321.223300
2006-01-01	43413620252.246700
2006-04-01	28106608005.663400
2006-07-01	37557174419.084700
2006-10-01	28787596949.688500
2007-01-01	69878553278.439600
2007-04-01	45382555274.910600
2007-07-01	59249632804.130104
2007-10-01	49311355343.107500
2008-01-01	71142344822.321000
2008-04-01	36791707185.898605
2008-07-01	29720071600.502500
2008-10-01	42838173610.054100
2009-01-01	60673999891.743600
2009-04-01	22159706033.089500
2009-07-01	47051977666.559006
2009-10-01	37764937373.918200
2010-01-01	76249178400.892790
2010-04-01	43591577423.255196
2010-07-01	90482936402.796900
2010-10-01	36639231457.479100
2011-01-01	73465539512.436300
2011-04-01	11726701312.552800
2011-07-01	57590915506.802100
2011-10-01	14941141675.900400
2012-01-01	26755250948.950300
2012-04-01	17245477495.647503
2012-07-01	21223981482.808403
2012-10-01	-12041996784.634901
2013-01-01	-6487671917.184900
2013-04-01	-8949217371.760030
2013-07-01	35016084081.755400
2013-10-01	-23801567134.482900
2014-01-01	-11408523079.322300
2014-04-01	20027141349.298300
2014-07-01	32485818683.348300
2014-10-01	17722298164.146800
2015-01-01	56755876776.896900
2015-04-01	40767034747.247600
2015-07-01	46195736765.782104
2015-10-01	37279505475.133095
2016-01-01	79232481694.118600
2016-04-01	66593554940.475200
2016-07-01	106461999374.513990
2016-10-01	9464415034.641590
2017-01-01	49328078719.365810
2017-04-01	39602018014.402700
2017-07-01	41264792631.983000
2017-10-01	27231256898.264500
2018-01-01	69791025496.118800
2018-04-01	48662830944.926796
2018-07-01	38258661911.036896