Quarter	US Dollars, monthly level
1960-01-01	50900000.000000000
1960-04-01	36300000.000000000
1960-07-01	31800000.000000004
1960-10-01	84133333.333333300
1961-01-01	47333333.333333300
1961-04-01	37400000.000000000
1961-07-01	32866666.666666698
1961-10-01	105733333.333333000
1962-01-01	75266666.666666610
1962-04-01	42233333.333333306
1962-07-01	35466666.666666700
1962-10-01	97200000.000000000
1963-01-01	78933333.333333400
1963-04-01	56966666.666666700
1963-07-01	40166666.666666700
1963-10-01	114100000.000000000
1964-01-01	88600000.000000000
1964-04-01	51566666.666666700
1964-07-01	41300000.000000000
1964-10-01	127099999.999999990
1965-01-01	84466666.666666700
1965-04-01	73733333.333333400
1965-07-01	50333333.333333300
1965-10-01	119233333.333333000
1966-01-01	108700000.000000000
1966-04-01	87133333.333333400
1966-07-01	67466666.666666700
1966-10-01	142600000.000000000
1967-01-01	128566666.666667000
1967-04-01	90666666.666666600
1967-07-01	97666666.666666690
1967-10-01	178333333.333333020
1968-01-01	107600000.000000000
1968-04-01	97966666.666666700
1968-07-01	98766666.666666600
1968-10-01	163433333.333333000
1969-01-01	105066666.666667000
1969-04-01	117733333.333333000
1969-07-01	119933333.333333000
1969-10-01	210900000.000000000
1970-01-01	138866666.666666980
1970-04-01	138700000.000000000
1970-07-01	151266666.666666980
1970-10-01	213733333.333333000
1971-01-01	128366666.666666980
1971-04-01	135700000.000000000
1971-07-01	149500000.000000000
1971-10-01	249366666.666666980
1972-01-01	195233333.333333020
1972-04-01	194600000.000000000
1972-07-01	184333333.333333000
1972-10-01	296700000.000000000
1973-01-01	280733333.333333000
1973-04-01	259833333.333333020
1973-07-01	322900000.000000000
1973-10-01	591549962.898346100
1974-01-01	408361429.925380000
1974-04-01	552966666.666667100
1974-07-01	446233333.333332960
1974-10-01	623566666.666667100
1975-01-01	514622640.712841030
1975-04-01	524287298.994036000
1975-07-01	557399438.675886000
1975-10-01	700262063.506206000
1976-01-01	501840010.831505000
1976-04-01	595937117.607341000
1976-07-01	580824313.290682900
1976-10-01	882354244.877785000
1977-01-01	594202607.324756000
1977-04-01	643985910.830058900
1977-07-01	624256499.463156000
1977-10-01	895447393.935605000
1978-01-01	700068966.610942000
1978-04-01	758116647.197406000
1978-07-01	795535646.141424100
1978-10-01	1114495974.127539900
1979-01-01	881861974.765140000
1979-04-01	930114926.589384000
1979-07-01	803628300.455400000
1979-10-01	1267835379.640480000
1980-01-01	1160502695.966610000
1980-04-01	1170289315.560870000
1980-07-01	1128934904.950410100
1980-10-01	1691387218.245180000
1981-01-01	733146279.811366100
1981-04-01	1222996994.229570000
1981-07-01	1044472944.660729900
1981-10-01	1250226118.795580100
1982-01-01	1185023499.718520200
1982-04-01	957926927.911822000
1982-07-01	1185480554.749009800
1982-10-01	978624661.377288000
1983-01-01	997731090.279331100
1983-04-01	1026205190.612970100
1983-07-01	918480536.569636000
1983-10-01	1478420699.429700000
1984-01-01	1191813133.795960200
1984-04-01	1291529705.044820000
1984-07-01	1012482899.396600000
1984-10-01	1321631743.229900100
1985-01-01	1113059188.101920100
1985-04-01	1141872456.492480000
1985-07-01	971607467.671201000
1985-10-01	1335844448.187410000
1986-01-01	1057289919.717989900
1986-04-01	1439274051.565880000
1986-07-01	1565046541.582600000
1986-10-01	1604869180.473610000
1987-01-01	1305363001.337990000
1987-04-01	1326196693.711680000
1987-07-01	1638055569.071460000
1987-10-01	2828050415.596600000
1988-01-01	887833782.059478000
1988-04-01	1287636507.813979900
1988-07-01	1273992821.259350000
1988-10-01	1987805913.246290000
1989-01-01	1425309111.816400000
1989-04-01	1667346570.005760000
1989-07-01	1822858220.789530000
1989-10-01	2645230422.139130000
1990-01-01	1951426930.156240000
1990-04-01	1836776111.431049800
1990-07-01	1704456152.683540000
1990-10-01	2542882887.646820000
1991-01-01	1874313469.849110000
1991-04-01	2041567399.390210000
1991-07-01	2236339861.086860000
1991-10-01	2511597627.110279600
1992-01-01	2276221994.526260000
1992-04-01	1928263497.945140100
1992-07-01	2479409366.930870000
1992-10-01	3139855982.049500000
1993-01-01	2413894622.663910400
1993-04-01	3149184741.634710000
1993-07-01	2487704786.159199700
1993-10-01	2676044734.943980000
1994-01-01	2424279544.056939600
1994-04-01	2533531946.088650000
1994-07-01	2621195492.133510000
1994-10-01	3565181866.355020000
1995-01-01	2912498202.350730400
1995-04-01	3004572465.862220000
1995-07-01	3060515439.075430000
1995-10-01	3445220580.099869700
1996-01-01	3114019257.026980000
1996-04-01	3215977328.493160000
1996-07-01	3237634578.050520000
1996-10-01	3489981721.464230000
1997-01-01	3197873905.160060400
1997-04-01	3249266161.967250000
1997-07-01	2939668336.889880000
1997-10-01	3110891972.942970000
1998-01-01	2845902669.292519600
1998-04-01	2444339085.649790300
1998-07-01	2725412606.714140400
1998-10-01	3206388926.322420000
1999-01-01	2841215729.343360000
1999-04-01	2791888712.969130000
1999-07-01	2736611149.485980000
1999-10-01	3191299156.298730000
2000-01-01	3046504577.656480300
2000-04-01	3175428078.369050000
2000-07-01	2752465757.476220000
2000-10-01	2913208288.008110000
2001-01-01	2856661384.585450000
2001-04-01	3013208747.266220000
2001-07-01	2580761258.268910000
2001-10-01	2971778066.425250000
2002-01-01	2624875718.128410000
2002-04-01	2903228278.402760000
2002-07-01	2839910031.804790000
2002-10-01	3084792476.381920000
2003-01-01	3394612776.462030400
2003-04-01	3583628952.521300300
2003-07-01	3409810243.766319800
2003-10-01	3780685634.116940000
2004-01-01	3734343885.588520000
2004-04-01	4101415089.782580000
2004-07-01	3977555905.053330000
2004-10-01	4834859301.605760000
2005-01-01	4365764111.612030000
2005-04-01	4595993361.127630000
2005-07-01	4540290712.211881000
2005-10-01	4933978193.668430000
2006-01-01	4852020202.894670500
2006-04-01	5657338718.550910000
2006-07-01	5414428740.555530000
2006-10-01	5619777256.235069000
2007-01-01	5810200420.418270000
2007-04-01	6170148281.974669000
2007-07-01	6827697751.862240000
2007-10-01	7755038260.850000000
2008-01-01	7113852903.210110000
2008-04-01	8778307801.405249000
2008-07-01	8583064557.418311000
2008-10-01	6776500924.955991000
2009-01-01	5277463928.951730000
2009-04-01	6425429877.774170000
2009-07-01	6671023599.439011000
2009-10-01	6767981403.566260000
2010-01-01	6149716176.346310000
2010-04-01	7037181085.738210000
2010-07-01	6473939431.302629000
2010-10-01	8539366115.070050000
2011-01-01	7302734130.624260000
2011-04-01	9368421791.907750000
2011-07-01	8839394299.065290000
2011-10-01	8451760139.625700000
2012-01-01	8090797963.852139000
2012-04-01	8661680123.109540000
2012-07-01	8612971983.936580000
2012-10-01	10098822172.472599000
2013-01-01	8442545238.154830000
2013-04-01	9338543977.604880000
2013-07-01	9433474658.263640000
2013-10-01	9015829574.036781000
2014-01-01	8722489094.287160000
2014-04-01	9334970413.393309000
2014-07-01	9110770892.234590000
2014-10-01	8839169807.783760000
2015-01-01	7056871553.859380000
2015-04-01	7464007890.496679000
2015-07-01	6967154684.273790000
2015-10-01	7226473850.587830000
2016-01-01	6314017617.626101000
2016-04-01	7099003366.720711000
2016-07-01	7352957257.132210000
2016-10-01	7396927593.421230000
2017-01-01	7365366297.091170000
2017-04-01	8036439876.367350000
2017-07-01	8083385953.356940000
2017-10-01	9145641441.544280000
2018-01-01	9666522650.614279000
2018-04-01	10234693513.910900000