Quarter	US Dollars, sum over component sub-periods
1996-01-01	-1371260706.08993000
1996-04-01	-915250740.36144800
1996-07-01	-169713101.69504800
1996-10-01	-1075428202.04384000
1997-01-01	-1426482167.03366020
1997-04-01	-1376639216.83101990
1997-07-01	362733827.18532800
1997-10-01	-1435784807.43948980
1998-01-01	-1501879078.63705020
1998-04-01	-2777335441.83486000
1998-07-01	472557017.65889000
1998-10-01	-2374796510.13410000
1999-01-01	-2806261218.77668000
1999-04-01	-2005711894.87829000
1999-07-01	-1786930000.64731000
1999-10-01	-2384020719.00554000
2000-01-01	-3698292361.58348040
2000-04-01	-4214607770.82034000
2000-07-01	-1644703873.30355000
2000-10-01	-1527689705.55859000
2001-01-01	-2778097879.29760000
2001-04-01	-3704072520.61126040
2001-07-01	-2012861728.22106000
2001-10-01	-2598327889.71034000
2002-01-01	-2118813106.07675000
2002-04-01	-2934490030.38483000
2002-07-01	-1915241081.19037000
2002-10-01	-1534716359.39557000
2003-01-01	-2597927074.99333000
2003-04-01	-2411497745.49458030
2003-07-01	-1418327847.91096000
2003-10-01	-1331500634.91772990
2004-01-01	-3160378775.87716000
2004-04-01	-3953207585.44137000
2004-07-01	-1978291817.89864000
2004-10-01	-3562356329.22918030
2005-01-01	-4704547335.26187000
2005-04-01	-5824388695.04750000
2005-07-01	-3410944002.68196960
2005-10-01	-3331395654.77165000
2006-01-01	-5183285964.56302000
2006-04-01	-5588110911.74424000
2006-07-01	-3970207464.70247030
2006-10-01	-4754586154.66996000
2007-01-01	-3980546074.10939000
2007-04-01	-6263173634.79077000
2007-07-01	-3691540773.62500000
2007-10-01	-7338096113.60423900
2008-01-01	-6989137735.86820000
2008-04-01	-8989644319.81830000
2008-07-01	-6500373889.56773950
2008-10-01	-5650123580.63101000
2009-01-01	-5784509116.28512000
2009-04-01	-6817285324.98292100
2009-07-01	-3264226968.10475000
2009-10-01	-6927116809.85254000
2010-01-01	-6224190248.38643000
2010-04-01	-6503373370.04206000
2010-07-01	-3089994125.70981000
2010-10-01	-4541594091.45371000
2011-01-01	-4209687287.97803000
2011-04-01	-5990354839.71462900
2011-07-01	-91777671.67204240
2011-10-01	-1173522386.92800000
2012-01-01	-1728439544.05289980
2012-04-01	-1204129548.63648990
2012-07-01	1560430829.68405000
2012-10-01	1968768033.95541000
2013-01-01	1432971240.25171000
2013-04-01	1038277837.28069000
2013-07-01	1590852219.88469980
2013-10-01	3137367066.68134000
2014-01-01	-490636284.14058100
2014-04-01	865263637.16322210
2014-07-01	2443744750.82544000
2014-10-01	780401821.97631100
2015-01-01	263420717.57891200
2015-04-01	-768703177.46208000
2015-07-01	2755897918.31240030
2015-10-01	304208035.26334600
2016-01-01	-309699646.05450505
2016-04-01	-601872882.85483000
2016-07-01	3024013495.96630000
2016-10-01	1174485029.89878000
2017-01-01	-436878410.63558400
2017-04-01	-931511076.72848610
2017-07-01	3285050205.82563000
2017-10-01	1874607956.10554000
2018-01-01	36866328.52790270
2018-04-01	-1623615672.53066020