Quarter	US Dollars, sum over component sub-periods
2002-01-01	-16655957.391583900
2002-04-01	-11035374.605019700
2002-07-01	-21641142.160343100
2002-10-01	-12005603.854463400
2003-01-01	-22543995.278867703
2003-04-01	-20446047.771503700
2003-07-01	-22513140.443030998
2003-10-01	-13088924.918762300
2004-01-01	-25002996.644597802
2004-04-01	-31336401.591913300
2004-07-01	-29344254.406407400
2004-10-01	-20726436.824606200
2005-01-01	-18346424.148653500
2005-04-01	-36496817.665595800
2005-07-01	-31707023.264115598
2005-10-01	-17840390.868109500
2006-01-01	-42101417.674566200
2006-04-01	-26394585.952907998
2006-07-01	-35687258.109685090
2006-10-01	-29667792.066578697
2007-01-01	-47200151.076395996
2007-04-01	-49878911.856921810
2007-07-01	-59119647.398836200
2007-10-01	-18837924.462254200
2008-01-01	-44946223.381789100
2008-04-01	-65606439.866614800
2008-07-01	-59980381.910659604
2008-10-01	-45967997.517918500
2009-01-01	-96278379.353373590
2009-04-01	-59920206.611915395
2009-07-01	-110142627.758136000
2009-10-01	-100414398.437428010
2010-01-01	-24907831.140719400
2010-04-01	-24143042.991559000
2010-07-01	-21969845.310358297
2010-10-01	-65151379.674171600
2011-01-01	-58790696.129605400
2011-04-01	-57571886.974672094
2011-07-01	-59302495.541935100
2011-10-01	-39072501.975788906
2012-01-01	-48522202.678268105
2012-04-01	-38470592.608194700
2012-07-01	-43797176.454644500
2012-10-01	-36338500.297133400
2013-01-01	-134588459.029165980
2013-04-01	-57464433.761447094
2013-07-01	-54308860.129286304
2013-10-01	-28583387.592324500
2014-01-01	-57560681.379621200
2014-04-01	-46622763.333675995
2014-07-01	-49007347.306526400
2014-10-01	-58686217.012618600
2015-01-01	-47280641.616727800
2015-04-01	-48666100.443642400
2015-07-01	-37797712.473828700
2015-10-01	-31733931.736104400
2016-01-01	-73842976.105522500
2016-04-01	-53073218.563183900
2016-07-01	8926977.109863630
2016-10-01	-53875460.087100000
2017-01-01	-51146740.757336600
2017-04-01	-37392416.303150594
2017-07-01	-48154114.565195100
2017-10-01	-30615456.569562900
2018-01-01	-57757248.027047500
2018-04-01	-51221917.768758900