Quarter	US Dollars, monthly level
1960-01-01	3223639394.3224998
1960-04-01	3263607437.6952600
1960-07-01	3212209701.8184600
1960-10-01	3367455350.5089602
1961-01-01	3347786463.6629000
1961-04-01	3221438977.2043200
1961-07-01	3018864993.7636400
1961-10-01	3147931011.7947497
1962-01-01	3277570588.5292997
1962-04-01	3250130370.7131800
1962-07-01	3185304053.9066800
1962-10-01	3278768767.2173500
1963-01-01	3332686478.8514200
1963-04-01	3450215964.7626400
1963-07-01	3480275044.2069800
1963-10-01	3707040817.6014000
1964-01-01	3995781968.9853997
1964-04-01	4031771741.6166800
1964-07-01	3843683478.5210800
1964-10-01	4051904882.9721200
1965-01-01	3904659389.8273396
1965-04-01	4078291949.8358600
1965-07-01	3982720096.5367600
1965-10-01	4141015647.8757700
1966-01-01	4327433546.0198310
1966-04-01	4174138506.4435900
1966-07-01	4177971935.8183904
1966-10-01	3946332483.0681500
1967-01-01	4517464357.9600300
1967-04-01	4518006520.5806690
1967-07-01	4239580613.1800800
1967-10-01	4384399060.9117600
1968-01-01	4824281191.9270790
1968-04-01	4673860047.1653900
1968-07-01	4647705440.9696400
1968-10-01	4764713657.3758000
1969-01-01	4909261323.0835900
1969-04-01	5014004279.6587200
1969-07-01	4840153570.3398900
1969-10-01	5117465223.9196900
1970-01-01	5357842419.0520710
1970-04-01	5884199200.0137900
1970-07-01	5382622596.9716400
1970-10-01	5928347237.8036800
1971-01-01	6093064021.0803800
1971-04-01	6196538529.4071600
1971-07-01	5890750253.1814600
1971-10-01	6453329365.9929700
1972-01-01	7144213428.3816190
1972-04-01	7249246635.4510390
1972-07-01	6339005000.3108810
1972-10-01	7560453127.8913990
1973-01-01	8784431312.8204900
1973-04-01	9569781078.9507500
1973-07-01	9957783123.6925810
1973-10-01	11095250220.3513980
1974-01-01	12333451674.1598000
1974-04-01	14653182996.3586000
1974-07-01	13835023865.3224000
1974-10-01	14249868985.4826000
1975-01-01	14149399432.2751000
1975-04-01	13829220275.2846980
1975-07-01	12996717240.7631000
1975-10-01	13266414336.3371000
1976-01-01	13715292536.8420000
1976-04-01	14485356670.6957000
1976-07-01	14032974151.4264000
1976-10-01	14767089306.7890000
1977-01-01	15858859084.3054000
1977-04-01	16741996323.2370000
1977-07-01	15588482036.6493000
1977-10-01	16298999330.9921990
1978-01-01	18390205125.9963000
1978-04-01	19376368240.5706980
1978-07-01	18782893731.3712000
1978-10-01	20317937458.3023000
1979-01-01	21993293076.7780000
1979-04-01	25492617474.6988000
1979-07-01	25305080380.2957000
1979-10-01	27596598646.8414000
1980-01-01	30373234096.7796020
1980-04-01	29877515526.6722030
1980-07-01	27245991540.6803000
1980-10-01	27194140971.3450000
1981-01-01	25385105267.3099000
1981-04-01	24966942918.1795000
1981-07-01	24905413154.4912000
1981-10-01	26902130860.0967030
1982-01-01	26114488758.3797000
1982-04-01	26518790770.4812000
1982-07-01	23797663325.8559000
1982-10-01	23547893119.9934000
1983-01-01	24410699694.5389000
1983-04-01	25729225959.7090030
1983-07-01	24098065875.2528000
1983-10-01	25177888896.6114000
1984-01-01	26504779500.2841000
1984-04-01	27410885568.5543980
1984-07-01	24801199275.1831000
1984-10-01	26199678318.5373000
1985-01-01	25616812467.9521030
1985-04-01	27437349163.8546000
1985-07-01	26850405767.0343970
1985-10-01	29512393927.2836000
1986-01-01	29370443425.5546000
1986-04-01	32388591472.4456000
1986-07-01	30926937279.3789020
1986-10-01	32899189905.2178040
1987-01-01	34298771523.8420000
1987-04-01	37852356688.3416000
1987-07-01	38108817727.7675000
1987-10-01	44130991713.2051000
1988-01-01	44659822341.8045960
1988-04-01	48471400956.2681000
1988-07-01	45253705203.4889000
1988-10-01	51317035179.3363000
1989-01-01	50436170310.6503000
1989-04-01	50635242546.8696000
1989-07-01	48808704911.5184900
1989-10-01	49446756955.8832000
1990-01-01	53862970553.8029000
1990-04-01	55172948280.2819000
1990-07-01	56005956823.0353000
1990-10-01	59401962794.0405000
1991-01-01	54855226120.8073040
1991-04-01	51376142420.1091000
1991-07-01	49784423327.2644000
1991-10-01	54021573278.7038000
1992-01-01	53565565230.8956000
1992-04-01	57242119862.6180950
1992-07-01	57934489075.3746000
1992-10-01	52716605951.7531050
1993-01-01	48972658616.0698000
1993-04-01	52931576754.5453950
1993-07-01	50514194906.0467000
1993-10-01	52105493144.6310960
1994-01-01	53864571895.3760000
1994-04-01	57054628683.8610000
1994-07-01	56358854832.9768100
1994-10-01	62426832697.6591000
1995-01-01	62965539499.2112000
1995-04-01	68787846643.1530000
1995-07-01	66710282402.3687060
1995-10-01	69171052197.9816900
1996-01-01	70494009333.4049000
1996-04-01	73117064927.8374000
1996-07-01	70696644187.4211000
1996-10-01	76396990841.2953000
1997-01-01	74215942694.4218900
1997-04-01	79786858577.8723000
1997-07-01	75181548550.0495900
1997-10-01	80645547256.6767100
1998-01-01	77194010118.0121000
1998-04-01	79613977477.7068000
1998-07-01	76892840549.1808000
1998-10-01	79697364025.5740000
1999-01-01	77423383903.1277900
1999-04-01	76001631745.5906000
1999-07-01	79951220982.8157000
1999-10-01	83918400346.1680000
2000-01-01	84260683320.6648000
2000-04-01	83525510868.4279000
2000-07-01	81533392676.3877100
2000-10-01	84860705070.9562000
2001-01-01	84787054213.5103000
2001-04-01	82262303785.7679000
2001-07-01	78588536110.8129900
2001-10-01	79478100354.8898000
2002-01-01	78099561203.6138000
2002-04-01	84240159765.6644000
2002-07-01	87279411560.5445100
2002-10-01	88721219476.9670000
2003-01-01	90932515337.6836000
2003-04-01	93808106113.5988900
2003-07-01	93351925294.0866000
2003-10-01	103755709329.3240000
2004-01-01	109461216578.8180000
2004-04-01	111208842718.2050000
2004-07-01	113829232291.6340000
2004-10-01	122470898595.3740000
2005-01-01	119154014646.9560000
2005-04-01	123803100025.2690000
2005-07-01	122137548472.7960000
2005-10-01	123665310052.5069900
2006-01-01	133846253259.7789900
2006-04-01	143685109987.0510000
2006-07-01	139041532852.8130000
2006-10-01	143919315710.3630000
2007-01-01	147680382091.2590000
2007-04-01	152219534745.0230000
2007-07-01	159120528322.6269800
2007-10-01	166749068627.3360000
2008-01-01	164007164198.7040000
2008-04-01	176150574553.3190000
2008-07-01	165838513636.9420000
2008-10-01	129504010439.2620100
2009-01-01	109048392038.7500000
2009-04-01	115835758625.6760000
2009-07-01	125011397975.9030000
2009-10-01	134501285017.5350000
2010-01-01	131517487715.8880000
2010-04-01	132896918032.6460000
2010-07-01	141805094494.6590000
2010-10-01	153954380144.1970000
2011-01-01	154057944073.7030000
2011-04-01	159517077791.0470000
2011-07-01	162107753168.6300000
2011-10-01	160728677494.4100000
2012-01-01	160659222626.3760000
2012-04-01	158499597249.5090000
2012-07-01	157743333803.1779800
2012-10-01	163282542627.2170000
2013-01-01	156522327537.5730000
2013-04-01	159297571853.0940200
2013-07-01	163055369095.4160200
2013-10-01	167443043934.9080000
2014-01-01	166914300719.5270000
2014-04-01	169313193869.8440200
2014-07-01	171013379587.9130000
2014-10-01	166303953343.9709800
2015-01-01	153268389274.3520000
2015-04-01	151463344291.7120000
2015-07-01	151686223238.9210000
2015-10-01	153307251097.1680000
2016-01-01	142707073832.6800200
2016-04-01	147972479068.9380000
2016-07-01	144158754156.6869800
2016-10-01	144013601701.8550000
2017-01-01	145113028390.1650000
2017-04-01	145981030719.9640000
2017-07-01	152972374774.2559800
2017-10-01	159453104537.0070000
2018-01-01	163470555713.7850000
2018-04-01	158250614271.9240000
2018-07-01	157248737054.0930000