Quarter	US Dollars, sum over component sub-periods
1981-01-01	-1675679.8291434401
1981-04-01	-834222.7839030510
1981-07-01	-825162.4282017420
1981-10-01	-839331.3782588220
1982-01-01	-827101.9521935000
1982-04-01	-803611.9901327819
1982-07-01	-800517.9222399370
1982-10-01	-812245.0276812200
1983-01-01	-814856.6046538070
1983-04-01	-812329.6448062661
1983-07-01	-811136.1582352700
1983-10-01	-807413.9611176089
1984-01-01	0.0000000000
1984-04-01	0.0000000000
1984-07-01	0.0000000000
1984-10-01	0.0000000000
1985-01-01	0.0000000000
1985-04-01	0.0000000000
1985-07-01	0.0000000000
1985-10-01	0.0000000000
1986-01-01	-4990024.6747815500
1986-04-01	0.0000000000
1986-07-01	0.0000000000
1986-10-01	0.0000000000
1987-01-01	-747481.5085490050
1987-04-01	-749949.2063638350
1987-07-01	-12856357.1074629000
1987-10-01	-12963386.4460152000
1988-01-01	-16569096.8708278000
1988-04-01	-13006195.2760585000
1988-07-01	-99231778.0956110000
1988-10-01	-13247383.0301903000
1989-01-01	-23489863.6781671000
1989-04-01	-9218959.4425101900
1989-07-01	-127700865.8788510100
1989-10-01	-23957542.4863098000
1990-01-01	-568011000.2934680000
1990-04-01	-854427.3849629160
1990-07-01	-867014.9199692780
1990-10-01	-861011.7687431640
1991-01-01	-865053.6067751630
1991-04-01	-870130.0616585100
1991-07-01	-874172.0785788229
1991-10-01	-112735373.4675280000
1992-01-01	-54346449.6959593000
1992-04-01	-837174.2954269700
1992-07-01	-44950244.5647698000
1992-10-01	-3961779.8598949600
1993-01-01	-224281801.7431330000
1993-04-01	-3935952.7528311200
1993-07-01	-29905960.0396874000
1993-10-01	-3019889.2810662203
1994-01-01	-33538129.3163982970
1994-04-01	-2893869.9570567403
1994-07-01	-3646251.4889845200
1994-10-01	-2923179.5383899900
1995-01-01	-78909558.0948457100
1995-04-01	-178653502.5287010000
1995-07-01	-737646.7396555970
1995-10-01	-174745804.3828420000
1996-01-01	-40893302.9645719000
1996-04-01	-12456619.7183320000
1996-07-01	-43057448.6438749000
1996-10-01	-22950633.2231913000
1997-01-01	-46345365.0574589000
1997-04-01	-8655198.9790278900
1997-07-01	-41873546.5757333040
1997-10-01	-2129061.2523975600
1998-01-01	-53112909.9436473000
1998-04-01	-2073181.9367831901
1998-07-01	-41610197.5319250000
1998-10-01	-33723379.1443546040
1999-01-01	-58232380.3267069000
1999-04-01	-3394398.2475931700
1999-07-01	-45099275.0092445000
1999-10-01	-2037578.1289405199
2000-01-01	-58500713.8475016000
2000-04-01	-2027124.5240445102
2000-07-01	-31042794.9462435000
2000-10-01	-24251220.9636590000
2001-01-01	12433752.0955968000
2001-04-01	-42174266.3269423000
2001-07-01	-42071498.2693476000
2001-10-01	-31026331.2201132000
2002-01-01	-21959405.5262016000
2002-04-01	-28314353.3859521000
2002-07-01	-55025919.0832937000
2002-10-01	-1911540.8883161200
2003-01-01	-54339007.2262793000
2003-04-01	-128101393.9771619900
2003-07-01	-67418272.6397476000
2003-10-01	-2280314.6702514100
2004-01-01	-68308848.2807966000
2004-04-01	-1471823.2140691602
2004-07-01	-77243900.4715239000
2004-10-01	-1638772.6931041300
2005-01-01	-81564494.1610043000
2005-04-01	-1608208.1006672600
2005-07-01	-106365681.6721680000
2005-10-01	-851942.0415829620
2006-01-01	-98747840.3995625100
2006-04-01	-1781915.9714941700
2006-07-01	-17837356.4030688000
2006-10-01	-88659778.8172854000
2007-01-01	-55480244.1172110000
2007-04-01	-92841919.0741994000
2007-07-01	-15306384.3834253000
2007-10-01	-104917731.8331639900
2008-01-01	-112445762.7433800000
2008-04-01	-8905311.9159661010
2008-07-01	-122785853.5481360100
2008-10-01	-1649882.8941815400
2009-01-01	-229636712.6767349800
2009-04-01	-1713736.9369289200
2009-07-01	-2734275.3222603200
2009-10-01	-500078451.1517319700
2010-01-01	-67257943.7629297000
2010-04-01	-1945661.8479014600
2010-07-01	-50046663.5557628000
2010-10-01	-1973939.4541535400
2011-01-01	-55774280.9705250000
2011-04-01	-2066445.3115099200
2011-07-01	4727688607.2418500000
2011-10-01	-1955453.4719175200
2012-01-01	-136872903.7322490000
2012-04-01	-1979912.5641097499
2012-07-01	-4020465.7065928700
2012-10-01	-130175338.9985750000
2013-01-01	-95178990.8853854100
2013-04-01	-1954088.5761141000
2013-07-01	-3851132.7935020500
2013-10-01	-1905256.9759275100
2014-01-01	379775785.7821139700
2014-04-01	-1834630.8007375900
2014-07-01	-3673473.8431316400
2014-10-01	-12318868.1638172000
2015-01-01	-81433214.8076514900
2015-04-01	-1627074.5200130201
2015-07-01	-1528483.3028914100
2015-10-01	-1497983.5514564200
2016-01-01	-37126284.2276065950
2016-04-01	0.0000000000
2016-07-01	-30664810.9219884000
2016-10-01	0.0000000000
2017-01-01	-38540175.9156070000
2017-04-01	0.0000000000
2017-07-01	-19948613.2533575000
2017-10-01	0.0000000000
2018-01-01	-40320007.2596638000
2018-04-01	0.0000000000