Quarter	US Dollars, monthly level
1960-01-01	-59423553.966355406
1960-04-01	-65661896.847423600
1960-07-01	-30352668.498412800
1960-10-01	-51438208.563665300
1961-01-01	-65269396.727104895
1961-04-01	-71246046.507984890
1961-07-01	-38370904.704149700
1961-10-01	-53733983.920278795
1962-01-01	-68089896.821109710
1962-04-01	-80689036.766517200
1962-07-01	-52991153.907236405
1962-10-01	-77059577.636361600
1963-01-01	-73156532.462580590
1963-04-01	-89325315.809094000
1963-07-01	-48708970.600478400
1963-10-01	-98747039.010824300
1964-01-01	-89528530.448485390
1964-04-01	-104627673.611231000
1964-07-01	-67434856.813692200
1964-10-01	-88604232.570321500
1965-01-01	-123168321.576903000
1965-04-01	-144232243.429217000
1965-07-01	-74289296.503356400
1965-10-01	-84649589.287854200
1966-01-01	-92697481.879906100
1966-04-01	-97155773.117483390
1966-07-01	-87294657.678508800
1966-10-01	-86239836.781759290
1967-01-01	-100576740.555927990
1967-04-01	-87507371.261233600
1967-07-01	-46238180.910485305
1967-10-01	-61274507.673671700
1968-01-01	-93352480.536609300
1968-04-01	-101175027.152220000
1968-07-01	-66905972.337725700
1968-10-01	-102383615.464896000
1969-01-01	-123564624.800677000
1969-04-01	-156286182.750532000
1969-07-01	-99758354.875582600
1969-10-01	-124040068.358370000
1970-01-01	-119139560.967794000
1970-04-01	-142011692.159845980
1970-07-01	-102754119.239035010
1970-10-01	-136572156.737815000
1971-01-01	-192355355.274804980
1971-04-01	-136106408.706167000
1971-07-01	-93426618.939147400
1971-10-01	-108508508.508508000
1972-01-01	-146306852.637962000
1972-04-01	-147231609.046010000
1972-07-01	-53712516.297262100
1972-10-01	-151550827.423168000
1973-01-01	-196254633.360192980
1973-04-01	-189835526.315789000
1973-07-01	-134411400.247831000
1973-10-01	-141741025.437832030
1974-01-01	-283455194.953257000
1974-04-01	-426207144.569647970
1974-07-01	-299174894.217207000
1974-10-01	-163529822.926375000
1975-01-01	-246544322.987313000
1975-04-01	-201012315.080164020
1975-07-01	-37325853.866363704
1975-10-01	-103640449.438202000
1976-01-01	-356782573.940847000
1976-04-01	-214974121.328840000
1976-07-01	-150783898.305085000
1976-10-01	-157322626.773731980
1977-01-01	-414021590.130226000
1977-04-01	-299412068.076328000
1977-07-01	-120815500.289184000
1977-10-01	-158286491.387126000
1978-01-01	-359486915.707581000
1978-04-01	-457967086.749052000
1978-07-01	-314873576.529627000
1978-10-01	-299510147.418523000
1979-01-01	-739655380.894801000
1979-04-01	-867112920.448478000
1979-07-01	-610154770.952809000
1979-10-01	-504153663.144636030
1980-01-01	-1002574787.811330100
1980-04-01	-666426805.822575900
1980-07-01	-496094921.488188000
1980-10-01	-587906035.889070000
1981-01-01	-948643046.944198000
1981-04-01	-756370985.010707000
1981-07-01	-718893497.925934100
1981-10-01	-497822924.901186000
1982-01-01	-839486537.884096000
1982-04-01	-375587509.077704970
1982-07-01	-240462817.551963000
1982-10-01	-179686965.908069000
1983-01-01	-471069391.851818000
1983-04-01	-62867619.007248600
1983-07-01	11700285.895806700
1983-10-01	-42126376.811594200
1984-01-01	-308234779.965038000
1984-04-01	186647810.838330000
1984-07-01	38733549.158983700
1984-10-01	54155249.593054700
1985-01-01	-56252033.817195700
1985-04-01	148870297.130108000
1985-07-01	178496010.492950000
1985-10-01	73678174.650579200
1986-01-01	116716129.032258000
1986-04-01	257176481.197583020
1986-07-01	352775865.192970000
1986-10-01	296487844.628547970
1987-01-01	151546436.703648000
1987-04-01	731236660.079052000
1987-07-01	661594689.232565000
1987-10-01	806181449.937682000
1988-01-01	536666842.940243000
1988-04-01	1001591265.280540100
1988-07-01	898695777.213248000
1988-10-01	731098222.356132000
1989-01-01	501192263.279446000
1989-04-01	944050930.189722000
1989-07-01	1000239944.521500000
1989-10-01	813639593.167550900
1990-01-01	820929636.411196000
1990-04-01	1002130955.549640000
1990-07-01	579374473.580774000
1990-10-01	662948018.039402000
1991-01-01	522258101.918951900
1991-04-01	859667367.126237000
1991-07-01	890035796.471491000
1991-10-01	1195765632.693250000
1992-01-01	1227050719.069050000
1992-04-01	1763404043.752070000
1992-07-01	1565947432.024170000
1992-10-01	1488126734.243160000
1993-01-01	1421855921.855919800
1993-04-01	2091470765.521400200
1993-07-01	1540010349.531920000
1993-10-01	2173561915.556820000
1994-01-01	1516544642.008180100
1994-04-01	2019867226.398520000
1994-07-01	2211934366.082350300
1994-10-01	2547573219.580710000
1995-01-01	2511125610.805720000
1995-04-01	3020664954.803789600
1995-07-01	3067672454.623470000
1995-10-01	3333775455.196370000
1996-01-01	3239240665.299040000
1996-04-01	3446107705.673020000
1996-07-01	3455112678.274850000
1996-10-01	3775416998.083560000
1997-01-01	3596093488.426419700
1997-04-01	3793972694.063930000
1997-07-01	4434835799.351480000
1997-10-01	4532662820.696771000
1998-01-01	4077559571.742719700
1998-04-01	5310859166.073770000
1998-07-01	6027849182.727400000
1998-10-01	5773088246.785610000
1999-01-01	5500945491.494790000
1999-04-01	5622439481.928320000
1999-07-01	6781525192.597420000
1999-10-01	6508988914.745900000
2000-01-01	5593839968.161240000
2000-04-01	6455456728.516640000
2000-07-01	6787295264.407130000
2000-10-01	7359603855.867720000
2001-01-01	7789745856.969040000
2001-04-01	8000324788.148280000
2001-07-01	8772796651.802080000
2001-10-01	7704073541.311090000
2002-01-01	8520486498.065210000
2002-04-01	8785445645.966301000
2002-07-01	9313560635.187680000
2002-10-01	9193391198.254130000
2003-01-01	8133336734.823119000
2003-04-01	10010271399.773901000
2003-07-01	10198790317.799700000
2003-10-01	10604408988.728199000
2004-01-01	11484001373.847000000
2004-04-01	10665946904.915201000
2004-07-01	10607458897.009500000
2004-10-01	10151420136.001598000
2005-01-01	10217778837.819000000
2005-04-01	10988688394.729300000
2005-07-01	10751851588.861599000
2005-10-01	9139632241.732521000
2006-01-01	8188124288.879200000
2006-04-01	9517510629.105010000
2006-07-01	9539586456.198570000
2006-10-01	8378313470.002110500
2007-01-01	8621500928.696030000
2007-04-01	11297843151.332500000
2007-07-01	9937600265.088089000
2007-10-01	7737605019.315280000
2008-01-01	9094119197.581991000
2008-04-01	11009697844.473200000
2008-07-01	10747434781.706800000
2008-10-01	10643036133.891499000
2009-01-01	12258709704.127300000
2009-04-01	14080295277.785799000
2009-07-01	14633663957.844900000
2009-10-01	12060064588.800999000
2010-01-01	13442202959.287600000
2010-04-01	11980159138.353600000
2010-07-01	14867898962.208700000
2010-10-01	13988679876.249600000
2011-01-01	13879936466.003300000
2011-04-01	13564800149.537400000
2011-07-01	14427167594.009100000
2011-10-01	12529608254.277500000
2012-01-01	12301820930.912500000
2012-04-01	11000537721.004600000
2012-07-01	13586509810.180100000
2012-10-01	11421320423.747200000
2013-01-01	9744204433.711618000
2013-04-01	10972833626.748300000
2013-07-01	12182537012.074600000
2013-10-01	10421503116.161499000
2014-01-01	8652192706.805350000
2014-04-01	11508143500.045399000
2014-07-01	10316046608.023800000
2014-10-01	8604398328.382010000
2015-01-01	10228041084.216800000
2015-04-01	12708709711.762300000
2015-07-01	11920509156.305000000
2015-10-01	11500267433.813400000
2016-01-01	11100583149.809101000
2016-04-01	12742541011.795600000
2016-07-01	13537760787.108200000
2016-10-01	12358060785.699200000
2017-01-01	13712441197.042000000
2017-04-01	10745150735.490400000
2017-07-01	12863373389.082600000
2017-10-01	11218798556.404200000
2018-01-01	15190893557.684101000
2018-04-01	16590660044.562000000