Quarter	US Dollars, monthly level
1960-01-01	100351342.08201900
1960-04-01	91194381.55452820
1960-07-01	116359681.70379200
1960-10-01	120591732.00267400
1961-01-01	119606041.70614700
1961-04-01	117334152.10127400
1961-07-01	135830911.57007298
1961-10-01	131391191.79335201
1962-01-01	120987321.22410000
1962-04-01	108795020.96692200
1962-07-01	128126971.07788400
1962-10-01	130858012.05415900
1963-01-01	121362441.39408700
1963-04-01	133847742.20303600
1963-07-01	146971122.19405700
1963-10-01	145186190.53745500
1964-01-01	155833812.52296400
1964-04-01	148260482.35987797
1964-07-01	160224002.08057500
1964-10-01	156012382.13841600
1965-01-01	137687662.05837300
1965-04-01	132764333.28180800
1965-07-01	173997562.48417202
1965-10-01	170423441.34910800
1966-01-01	160456331.15879200
1966-04-01	142661062.02857402
1966-07-01	183235863.46457100
1966-10-01	192576502.35612600
1967-01-01	179924702.55220000
1967-04-01	187873342.71848798
1967-07-01	212522352.27072200
1967-10-01	198466343.10580100
1968-01-01	198224812.19778502
1968-04-01	211438441.23764998
1968-07-01	225564371.76722598
1968-10-01	232943213.23262000
1969-01-01	211510432.48958500
1969-04-01	241593873.04335300
1969-07-01	247486984.28257700
1969-10-01	262190563.25515200
1970-01-01	260916174.89047801
1970-04-01	273028133.08223300
1970-07-01	279045381.33284900
1970-10-01	305150329.43357000
1971-01-01	302426390.37138104
1971-04-01	326853577.73471904
1971-07-01	326718467.98049200
1971-10-01	356089659.61724200
1972-01-01	360183344.28041500
1972-04-01	390337096.92025400
1972-07-01	414539984.24149203
1972-10-01	441304831.80751600
1973-01-01	454121182.94909500
1973-04-01	523832831.99335897
1973-07-01	543899410.31708000
1973-10-01	606758921.32503500
1974-01-01	570350010.86862900
1974-04-01	647585339.22123700
1974-07-01	665074736.88231100
1974-10-01	755025467.74205000
1975-01-01	742865560.19863100
1975-04-01	773454285.98521100
1975-07-01	801058522.39097800
1975-10-01	866553383.88362600
1976-01-01	699685033.10631800
1976-04-01	831633958.32774100
1976-07-01	838116489.36961100
1976-10-01	943265953.82224600
1977-01-01	896857558.93634600
1977-04-01	1029988913.90746010
1977-07-01	1194146170.33462000
1977-10-01	1282884845.03029010
1978-01-01	1266173314.38351000
1978-04-01	1346631752.20797010
1978-07-01	1461692308.85397000
1978-10-01	1612978571.35692000
1979-01-01	1491248018.43279000
1979-04-01	1652791733.13127000
1979-07-01	1913140147.58304000
1979-10-01	2085755404.54505010
1980-01-01	1979957202.22857000
1980-04-01	2053355687.15188980
1980-07-01	2254882321.31402970
1980-10-01	2109658735.13139990
1981-01-01	1774811099.16381000
1981-04-01	1925981170.76029010
1981-07-01	1862780201.74165990
1981-10-01	2107290518.40297030
1982-01-01	1847773157.89229000
1982-04-01	2193154322.39994000
1982-07-01	1973907980.54058980
1982-10-01	2050002963.71025000
1983-01-01	1932667132.35028000
1983-04-01	2194338658.04551030
1983-07-01	2167346034.74034000
1983-10-01	2296903727.67943000
1984-01-01	2245264444.65354000
1984-04-01	2608313847.48842000
1984-07-01	2285489562.98346000
1984-10-01	2500550467.58611000
1985-01-01	2295116024.92298000
1985-04-01	2605064397.57896000
1985-07-01	2604962461.69316000
1985-10-01	2850240561.62690000
1986-01-01	2962050434.47558980
1986-04-01	3194421391.71809000
1986-07-01	3072186662.38990000
1986-10-01	3367725304.87570000
1987-01-01	3375575937.38274000
1987-04-01	4126554910.87403960
1987-07-01	3869706528.35539000
1987-10-01	4636977340.11984000
1988-01-01	4358245566.91547000
1988-04-01	4812785375.08618000
1988-07-01	4477280846.06989000
1988-10-01	5076409961.82518000
1989-01-01	4841723015.06517000
1989-04-01	5267386145.76431900
1989-07-01	5052095811.61487000
1989-10-01	5523910055.71723000
1990-01-01	5733325877.23590000
1990-04-01	6023942787.90156900
1990-07-01	5610118874.71995000
1990-10-01	6384282572.16049000
1991-01-01	6117808423.56586900
1991-04-01	5801335277.94466000
1991-07-01	5659205513.22768000
1991-10-01	6623785405.51125050
1992-01-01	6698914662.82209000
1992-04-01	7279548846.53810000
1992-07-01	7328784562.64297000
1992-10-01	7214965846.71412000
1993-01-01	6957358129.91297100
1993-04-01	7372825427.76153000
1993-07-01	6806332674.03220000
1993-10-01	7857648098.81614000
1994-01-01	7590815458.35683000
1994-04-01	8221650974.90805000
1994-07-01	8385964102.31813050
1994-10-01	9902473117.69593000
1995-01-01	9952946094.70449800
1995-04-01	10650458411.28120000
1995-07-01	10557981860.33050000
1995-10-01	11964352950.91350000
1996-01-01	11756470911.85559800
1996-04-01	11793657682.21250000
1996-07-01	11291833209.34140000
1996-10-01	13139944705.33990100
1997-01-01	13452185317.27750000
1997-04-01	14003464732.28830000
1997-07-01	13780850608.61140000
1997-10-01	14821005965.86810000
1998-01-01	14249664056.11320100
1998-04-01	16107887013.02880100
1998-07-01	16270440882.46820000
1998-10-01	17838589336.46870000
1999-01-01	16835993868.48850000
1999-04-01	17110319693.09150100
1999-07-01	17877951077.68170000
1999-10-01	19281229299.16020000
2000-01-01	18357168363.74910000
2000-04-01	19023436332.79260000
2000-07-01	18806670163.43140000
2000-10-01	20860126029.74560000
2001-01-01	21721415738.65110000
2001-04-01	20194344821.02880000
2001-07-01	20351598504.80590000
2001-10-01	20584554242.47820300
2002-01-01	21903736559.27490200
2002-04-01	22483686080.62240200
2002-07-01	21788005139.59890000
2002-10-01	21794254846.38160300
2003-01-01	21272519684.30860000
2003-04-01	23286650701.32390000
2003-07-01	22728617307.56600000
2003-10-01	25613304343.81239700
2004-01-01	26307612626.75840000
2004-04-01	25642552796.84860200
2004-07-01	25149070653.10820000
2004-10-01	27681552723.61160000
2005-01-01	27466170944.87410000
2005-04-01	28552324571.18410000
2005-07-01	26520186890.95359800
2005-10-01	27071584566.11789700
2006-01-01	25990666298.59630000
2006-04-01	27074616305.73489800
2006-07-01	27026027209.86410000
2006-10-01	28733184803.05420000
2007-01-01	29557564708.60140200
2007-04-01	30896745046.24500300
2007-07-01	29480217017.66850300
2007-10-01	31592514396.32200000
2008-01-01	32177657885.65719600
2008-04-01	33525471663.40559800
2008-07-01	31429783723.32340000
2008-10-01	28387945031.72620000
2009-01-01	28234908768.85160000
2009-04-01	29657728806.05750000
2009-07-01	29155277068.56460000
2009-10-01	28493015270.25100000
2010-01-01	29103823564.22780000
2010-04-01	27956004414.05710200
2010-07-01	29402254889.94120000
2010-10-01	31108439162.92690000
2011-01-01	32141852529.72250000
2011-04-01	33482229103.92280000
2011-07-01	31504980600.25919700
2011-10-01	30364042574.30230000
2012-01-01	31226335400.23959700
2012-04-01	29126174692.26880300
2012-07-01	29692312249.50700000
2012-10-01	28790247357.92350000
2013-01-01	28504450315.82330000
2013-04-01	28879372790.68589800
2013-07-01	29579906547.65210000
2013-10-01	29747366251.66110000
2014-01-01	29453068646.62840000
2014-04-01	31658260360.16000000
2014-07-01	30342097980.49450000
2014-10-01	29612091955.09610000
2015-01-01	29042939953.97500200
2015-04-01	31339569851.89000000
2015-07-01	30296738915.65770000
2015-10-01	32709091857.13670000
2016-01-01	30465961219.24800000
2016-04-01	33866305210.36830000
2016-07-01	33538442485.35799800
2016-10-01	32961040665.77900300
2017-01-01	33969110837.44780000
2017-04-01	33890662198.56970000
2017-07-01	33729894083.69590400
2017-10-01	35655852719.88940400
2018-01-01	41304727694.42270000
2018-04-01	41865351345.92020400