Quarter	US Dollars, monthly level
1957-01-01	13638692156.371601
1957-04-01	13903464651.469100
1957-07-01	13326876709.491098
1957-10-01	13830990743.084100
1958-01-01	12613163330.681400
1958-04-01	12885163655.182000
1958-07-01	12515661426.480200
1958-10-01	13806450038.169601
1959-01-01	12366075649.062700
1959-04-01	13716294786.075100
1959-07-01	13573746618.448100
1959-10-01	15283889079.067300
1960-01-01	15315720355.187899
1960-04-01	15757010757.513401
1960-07-01	15139113128.154400
1960-10-01	16711104947.641900
1961-01-01	16059948114.846200
1961-04-01	16461200434.211400
1961-07-01	16141198140.449099
1961-10-01	17667716112.043697
1962-01-01	16665811970.852499
1962-04-01	17787988430.883800
1962-07-01	16731369457.425600
1962-10-01	18056319348.156000
1963-01-01	17084669198.792198
1963-04-01	19101049451.119100
1963-07-01	18417260436.456200
1963-10-01	20754350808.782500
1964-01-01	20150947283.407898
1964-04-01	21293609310.771400
1964-07-01	20450503924.454002
1964-10-01	23153345760.535500
1965-01-01	21091932234.430000
1965-04-01	23661882113.959900
1965-07-01	22725853900.689900
1965-10-01	25625582958.741302
1966-01-01	24423194913.423000
1966-04-01	25773635174.392597
1966-07-01	25305215663.953197
1966-10-01	28024146178.872700
1967-01-01	26523487044.343900
1967-04-01	27935887643.780600
1967-07-01	25972923164.195800
1967-10-01	28433107390.045000
1968-01-01	28684719712.565400
1968-04-01	29790579489.576800
1968-07-01	30632500454.329597
1968-10-01	34034485005.142900
1969-01-01	31039672776.498703
1969-04-01	36365584367.786900
1969-07-01	34789069422.143200
1969-10-01	38879352400.681000
1970-01-01	37889534334.582400
1970-04-01	41882809087.473800
1970-07-01	39629211099.229800
1970-10-01	44362891752.803200
1971-01-01	42773336834.364105
1971-04-01	46116508311.944500
1971-07-01	45886106278.151000
1971-10-01	48541231613.830400
1972-01-01	50019737165.427300
1972-04-01	53761611893.247800
1972-07-01	50156587454.033005
1972-10-01	60429910325.620600
1973-01-01	61817386349.781105
1973-04-01	71123628488.444600
1973-07-01	73161766196.656200
1973-10-01	83707329434.309890
1974-01-01	85451302676.589300
1974-04-01	99661704901.541600
1974-07-01	97490883598.090410
1974-10-01	108652081383.563000
1975-01-01	103075206459.805010
1975-04-01	107063107157.465000
1975-07-01	97481223693.086500
1975-10-01	109709926494.297000
1976-01-01	107473009956.601000
1976-04-01	116213383313.442000
1976-07-01	113096292321.396010
1976-10-01	126646737062.416000
1977-01-01	123744544396.647000
1977-04-01	133375672018.626000
1977-07-01	127956179851.450000
1977-10-01	143295496989.914000
1978-01-01	141481459717.442000
1978-04-01	159121216792.814000
1978-07-01	153422107135.496980
1978-10-01	180115023830.875000
1979-01-01	172721702398.358000
1979-04-01	188945591827.962000
1979-07-01	190576070969.679000
1979-10-01	218372633841.100000
1980-01-01	220687365583.707000
1980-04-01	230215083615.087000
1980-07-01	221044402655.619000
1980-10-01	240302006272.766000
1981-01-01	226019112043.099000
1981-04-01	231900362150.434020
1981-07-01	215652338917.470000
1981-10-01	240923895511.328980
1982-01-01	222242488107.425020
1982-04-01	225639605477.080020
1982-07-01	202226003015.698000
1982-10-01	212129685528.556980
1983-01-01	208015882794.574980
1983-04-01	214288180278.241000
1983-07-01	201881392073.335020
1983-10-01	225476698117.678000
1984-01-01	225166805642.562000
1984-04-01	230401755782.648000
1984-07-01	218813135842.496980
1984-10-01	236971798977.248000
1985-01-01	217758034987.880980
1985-04-01	233888817292.478000
1985-07-01	228045699820.463000
1985-10-01	263375050418.073000
1986-01-01	256101518982.988000
1986-04-01	277872798720.278000
1986-07-01	268470654569.333000
1986-10-01	294873266731.103000
1987-01-01	292474603004.042050
1987-04-01	311138357461.772000
1987-07-01	306545182815.264950
1987-10-01	359869466202.238950
1988-01-01	345328686273.514000
1988-04-01	374608525631.596000
1988-07-01	346598849123.350040
1988-10-01	396390624990.300000
1989-01-01	383527017728.131000
1989-04-01	394572584703.767940
1989-07-01	373376286516.143000
1989-10-01	414724428873.237000
1990-01-01	426019388827.404000
1990-04-01	434728383369.607000
1990-07-01	433116777484.602000
1990-10-01	493796925603.069000
1991-01-01	463427257696.914000
1991-04-01	447440632143.407040
1991-07-01	433205651666.038000
1991-10-01	490297055070.177000
1992-01-01	478288619647.814000
1992-04-01	483576874603.092000
1992-07-01	490220547759.644000
1992-10-01	500718605148.355000
1993-01-01	468995880349.641970
1993-04-01	489505682880.206000
1993-07-01	461320171198.605000
1993-10-01	502997268394.910030
1994-01-01	492963865083.808000
1994-04-01	530017306128.866000
1994-07-01	536271753547.328000
1994-10-01	593834403449.184100
1995-01-01	610113300592.267000
1995-04-01	647329468882.869000
1995-07-01	608585916924.507100
1995-10-01	660226194954.738000
1996-01-01	641632167720.018000
1996-04-01	643157517975.599000
1996-07-01	628758974265.574000
1996-10-01	684444686398.193000
1997-01-01	640428245554.480000
1997-04-01	674330592031.246100
1997-07-01	646122990577.500000
1997-10-01	699033685535.864000
1998-01-01	655244582853.356900
1998-04-01	664110800922.256000
1998-07-01	635094356106.235000
1998-10-01	703552664469.151000
1999-01-01	654531674152.206000
1999-04-01	663738846853.363900
1999-07-01	669056397171.748000
1999-10-01	737337481310.631000
2000-01-01	725425428035.829000
2000-04-01	736405254000.544000
2000-07-01	717923999858.667000
2000-10-01	757873356577.061000
2001-01-01	743791577066.259900
2001-04-01	710153581489.767000
2001-07-01	664749426064.965000
2001-10-01	685625006899.901000
2002-01-01	655317430736.913000
2002-04-01	713184868438.342000
2002-07-01	719468526998.084000
2002-10-01	756091228955.454000
2003-01-01	762638165435.507900
2003-04-01	791781193285.440100
2003-07-01	784061902227.594000
2003-10-01	880805556250.455900
2004-01-01	903513828687.310000
2004-04-01	932029711134.122000
2004-07-01	917400809595.518100
2004-10-01	1010039846960.800000
2005-01-01	980425335986.073000
2005-04-01	1024155732591.970100
2005-07-01	994184548219.664000
2005-10-01	1049703127116.940100
2006-01-01	1076414105642.930000
2006-04-01	1148751193147.140000
2006-07-01	1117460540019.000000
2006-10-01	1202548849074.690000
2007-01-01	1201174153365.970000
2007-04-01	1259287107317.260000
2007-07-01	1266252750053.220200
2007-10-01	1381160281362.349900
2008-01-01	1421941202990.320000
2008-04-01	1512548686464.330000
2008-07-01	1446044563804.760000
2008-10-01	1216793365515.100000
2009-01-01	979808678034.536000
2009-04-01	1019567890588.630000
2009-07-01	1103113985275.100000
2009-10-01	1216732809842.030000
2010-01-01	1197448205318.660000
2010-04-01	1233288391935.980000
2010-07-01	1258130161276.720000
2010-10-01	1381936595595.220000
2011-01-01	1405566737909.540000
2011-04-01	1472915788673.480000
2011-07-01	1475455336357.370000
2011-10-01	1469738343278.540000
2012-01-01	1453470769760.490000
2012-04-01	1447388965619.660000
2012-07-01	1398394089102.910000
2012-10-01	1442994219848.170000
2013-01-01	1413986951545.390000
2013-04-01	1443869132778.590000
2013-07-01	1416728779350.800000
2013-10-01	1489737385021.599900
2014-01-01	1456356585918.410000
2014-04-01	1493773541799.660200
2014-07-01	1463218082337.619900
2014-10-01	1455031644390.500000
2015-01-01	1308331817220.450000
2015-04-01	1342353638208.150000
2015-07-01	1298962232168.539800
2015-10-01	1305763780960.900000
2016-01-01	1247939995382.510000
2016-04-01	1321557533860.000000
2016-07-01	1285774283512.020000
2016-10-01	1325017147069.810000
2017-01-01	1326080335827.990000
2017-04-01	1375299478755.579800
2017-07-01	1395562426482.109900
2017-10-01	1485038674617.780000
2018-01-01	1504916092085.260000