Quarter	US Dollars, sum over component sub-periods
1960-01-01	-112793346.319071010
1960-04-01	-194526011.939717980
1960-07-01	-378458455.259541000
1960-10-01	-187017582.827765020
1961-01-01	-131695634.870604010
1961-04-01	100184853.672025000
1961-07-01	-21201182.450368702
1961-10-01	8966925.651718840
1962-01-01	-20225991.747798500
1962-04-01	-22439981.464574100
1962-07-01	-192467938.795203000
1962-10-01	-86137333.486497900
1963-01-01	-70739780.908824600
1963-04-01	-85928719.865677200
1963-07-01	36998737.184532100
1963-10-01	120599962.480049000
1964-01-01	-43563007.187922800
1964-04-01	-91128303.401080600
1964-07-01	-226793334.944149000
1964-10-01	-107996250.192139000
1965-01-01	-248719318.576130000
1965-04-01	-301143786.642677000
1965-07-01	-317165633.941657000
1965-10-01	-195825010.770408000
1966-01-01	-151811677.584677000
1966-04-01	-83422477.048404500
1966-07-01	-134451166.008336000
1966-10-01	-162342259.292454000
1967-01-01	-195905484.109326000
1967-04-01	-91334199.969618400
1967-07-01	-330700433.841812000
1967-10-01	-323985564.274526000
1968-01-01	-224784226.436241980
1968-04-01	-389114729.639776000
1968-07-01	-326535866.075075000
1968-10-01	-225187679.788325000
1969-01-01	-196629143.274171020
1969-04-01	-208830129.506244000
1969-07-01	-226296892.517099000
1969-10-01	-199232628.633290000
1970-01-01	-262557428.153727020
1970-04-01	-37968851.523320400
1970-07-01	-263053978.777281000
1970-10-01	-215469252.141259000
1971-01-01	-213191395.639478000
1971-04-01	-196717494.696073000
1971-07-01	-73741299.827115100
1971-10-01	-95424578.434946600
1972-01-01	46449000.141711900
1972-04-01	332289001.013785000
1972-07-01	185801200.126212980
1972-10-01	436643070.532002030
1973-01-01	40484349.161873200
1973-04-01	271561049.839105960
1973-07-01	-63454158.154905796
1973-10-01	-73110107.211998400
1974-01-01	-355037455.998892000
1974-04-01	-698405164.921596000
1974-07-01	-986127558.831548000
1974-10-01	-440225929.442255000
1975-01-01	-98890820.481660100
1975-04-01	-334935003.647073030
1975-07-01	-521038813.698864040
1975-10-01	-724198439.003332000
1976-01-01	-378797963.315415000
1976-04-01	-466288684.185170000
1976-07-01	-545130841.928878000
1976-10-01	-868094029.058204000
1977-01-01	-485070013.065755960
1977-04-01	-764389311.022069000
1977-07-01	-1235794857.248310000
1977-10-01	-732090374.684868900
1978-01-01	-697779046.301565000
1978-04-01	-673430857.133602000
1978-07-01	-1268634661.283749800
1978-10-01	-1186799983.547640000
1979-01-01	-830542622.466997000
1979-04-01	-546788398.138646000
1979-07-01	-1075937292.407500000
1979-10-01	-398279346.334332000
1980-01-01	13224948.892310400
1980-04-01	-943805896.495474000
1980-07-01	-1695123468.511420000
1980-10-01	-1101322333.664820000
1981-01-01	-1289813039.317540000
1981-04-01	-1295589859.412430000
1981-07-01	-1867006659.136080000
1981-10-01	-3147527026.481380000
1982-01-01	-2033227733.607880000
1982-04-01	-2350973753.142830000
1982-07-01	-2333142075.887830000
1982-10-01	-1169726925.061090000
1983-01-01	-1866551093.011270000
1983-04-01	-761063786.434202100
1983-07-01	-1522803060.990460000
1983-10-01	-611833236.591596000
1984-01-01	-1315677884.628950000
1984-04-01	-1735457365.239490000
1984-07-01	-2466139456.041750000
1984-10-01	-1805223518.929489900
1985-01-01	-2094473147.191820000
1985-04-01	-2727867190.342480000
1985-07-01	-2664922639.382580300
1985-10-01	-2297756899.486099700
1986-01-01	-3736042455.238380000
1986-04-01	-2587770675.965850000
1986-07-01	-2471275130.605170200
1986-10-01	-1853165099.319970100
1987-01-01	-2902885417.868720000
1987-04-01	-1514546909.551230200
1987-07-01	-2048940167.436040200
1987-10-01	-2157416408.896100000
1988-01-01	-1818502736.251180200
1988-04-01	-1976000284.818879800
1988-07-01	-3574798765.829139700
1988-10-01	-3027017777.886040000
1989-01-01	-4425713986.848100000
1989-04-01	-3940469567.598600000
1989-07-01	-5053464674.418680000
1989-10-01	-4362271576.595870000
1990-01-01	-4472462807.416591000
1990-04-01	-2986853616.180269700
1990-07-01	-3660076134.672070000
1990-10-01	-3714805111.468010000
1991-01-01	-2745643710.231400000
1991-04-01	-2645979061.250499700
1991-07-01	-2860062774.119900000
1991-10-01	-2378472541.103739700
1992-01-01	-2010467171.142920000
1992-04-01	-2410701015.158720000
1992-07-01	-3570930666.047900000
1992-10-01	-1927378283.143679900
1993-01-01	-1842930638.685380000
1993-04-01	-2392703273.134280000
1993-07-01	-2963221110.581800000
1993-10-01	-2241430867.055720000
1994-01-01	-1852058406.342880000
1994-04-01	-3750892319.052050000
1994-07-01	-6035980503.341459000
1994-10-01	-4659147710.231620000
1995-01-01	-5279763523.841720000
1995-04-01	-4610421866.173691000
1995-07-01	-4926671824.822180000
1995-10-01	-4021610831.325420000
1996-01-01	-3140126520.969910000
1996-04-01	-2603724824.658029600
1996-07-01	-4613578815.335310000
1996-10-01	-3729387696.715080000
1997-01-01	-2876611489.922980300
1997-04-01	-1967383899.508390000
1997-07-01	-4224598391.250029600
1997-10-01	-3704963550.524800300
1998-01-01	-4259433664.084789800
1998-04-01	-3728986018.657779700
1998-07-01	-5385723730.223330000
1998-10-01	-4332702950.330100000
1999-01-01	-4907549326.651919000
1999-04-01	-5656444264.994480000
1999-07-01	-6814405906.678030000
1999-10-01	-4276593072.050160000
2000-01-01	-4556833077.955350000
2000-04-01	-4460794768.503440000
2000-07-01	-3626618298.536240000
2000-10-01	-2387217077.961130000
2001-01-01	-1808430543.559990000
2001-04-01	-1609053329.466150000
2001-07-01	-1862702293.441650000
2001-10-01	-2434456793.986740000
2002-01-01	-2379081252.607869600
2002-04-01	-3591769679.710480000
2002-07-01	-4926185640.400980000
2002-10-01	-5131387328.002960000
2003-01-01	-5447719261.908050000
2003-04-01	-7003208254.047661000
2003-07-01	-8037746088.475600000
2003-10-01	-8216840066.588809000
2004-01-01	-8914195426.577200000
2004-04-01	-8137589912.948211000
2004-07-01	-11311934740.202200000
2004-10-01	-12227530290.080300000
2005-01-01	-11019949458.678800000
2005-04-01	-9071955459.636860000
2005-07-01	-11479188454.908000000
2005-10-01	-10507683929.807001000
2006-01-01	-9857137096.766321000
2006-04-01	-9955802058.734360000
2006-07-01	-11612829998.318500000
2006-10-01	-12285689032.677700000
2007-01-01	-12794153411.564001000
2007-04-01	-13470205615.581999000
2007-07-01	-16956868764.458399000
2007-10-01	-19669024764.861000000
2008-01-01	-18358034056.752400000
2008-04-01	-14184247754.009700000
2008-07-01	-12502951140.222000000
2008-10-01	-5638542706.810781000
2009-01-01	-4767986325.938580500
2009-04-01	-11265362178.010300000
2009-07-01	-15797691255.231401000
2009-10-01	-21045784922.866700000
2010-01-01	-18438937988.220500000
2010-04-01	-5637434954.449039000
2010-07-01	-9736460016.984900000
2010-10-01	-13494863236.301300000
2011-01-01	-12965489671.868200000
2011-04-01	-8584256693.836719500
2011-07-01	-10541380424.740200000
2011-10-01	-13835984958.056100000
2012-01-01	-17253370341.301098000
2012-04-01	-10163639213.719200000
2012-07-01	-19173107656.619700000
2012-10-01	-18678644844.644500000
2013-01-01	-11274843964.743600000
2013-04-01	-11140759600.444400000
2013-07-01	-15928615905.920300000
2013-10-01	-10448032363.674000000
2014-01-01	-10325446954.852400000
2014-04-01	-8831499454.596860000
2014-07-01	-15941629613.746700000
2014-10-01	-11065681453.136700000
2015-01-01	-9499172911.621420000
2015-04-01	-14946412661.647501000
2015-07-01	-18515850344.934300000
2015-10-01	-15367085005.190600000
2016-01-01	-12579690736.128199000
2016-04-01	-12247437132.789300000
2016-07-01	-11362659496.927599000
2016-10-01	-3129952499.193300000
2017-01-01	-3331018136.440410000
2017-04-01	-7290332389.791209000
2017-07-01	-9996468485.659891000
2017-10-01	-15620120724.810200000
2018-01-01	-5604915426.624351000
2018-04-01	-9600720909.875490000