Quarter	US Dollars, monthly level
1960-01-01	4906000000.000000
1960-04-01	5382000000.000000
1960-07-01	4946000000.000000
1960-10-01	5365000000.000000
1961-01-01	5276000000.000000
1961-04-01	5178000000.000000
1961-07-01	4967000000.000000
1961-10-01	5617000000.000000
1962-01-01	5300000000.000000
1962-04-01	5847000000.000000
1962-07-01	5164000000.000000
1962-10-01	5406000000.000000
1963-01-01	5248000000.000000
1963-04-01	6105000000.000000
1963-07-01	5578000000.000000
1963-10-01	6418000000.000000
1964-01-01	6426000000.000000
1964-04-01	6619000000.000000
1964-07-01	6239000000.000000
1964-10-01	7223000000.000000
1965-01-01	5819000000.000000
1965-04-01	7377000000.000000
1965-07-01	6641000000.000000
1965-10-01	7642000000.000000
1966-01-01	7237000000.000000
1966-04-01	7784000000.000000
1966-07-01	7263000000.000000
1966-10-01	8036000000.000000
1967-01-01	7822000000.000000
1967-04-01	8096000000.000000
1967-07-01	7453000000.000000
1967-10-01	8154999999.999999
1968-01-01	8071000000.000000
1968-04-01	8713000000.000000
1968-07-01	8488000000.000000
1968-10-01	8956000000.000000
1969-01-01	7725000000.000000
1969-04-01	10332000000.000000
1969-07-01	9440000000.000000
1969-10-01	10508000000.000000
1970-01-01	10341000000.000000
1970-04-01	11353000000.000000
1970-07-01	10276000000.000000
1970-10-01	11255000000.000000
1971-01-01	11245000000.000000
1971-04-01	11561000000.000000
1971-07-01	11080000000.000000
1971-10-01	10243000000.000000
1972-01-01	12025000000.000000
1972-04-01	12178000000.000000
1972-07-01	11725000000.000000
1972-10-01	13831000000.000000
1973-01-01	15655000000.000000
1973-04-01	17562000000.000000
1973-07-01	17235000000.000000
1973-10-01	20886000000.000000
1974-01-01	22727000000.000000
1974-04-01	25284000000.000000
1974-07-01	23365000000.000000
1974-10-01	27133000000.000000
1975-01-01	27192000000.000000
1975-04-01	26740000000.000000
1975-07-01	25091000000.000000
1975-10-01	28624000000.000000
1976-01-01	27372000000.000000
1976-04-01	29707000000.000000
1976-07-01	27602000000.000000
1976-10-01	30722000000.000000
1977-01-01	29640700000.000000
1977-04-01	31777700000.000000
1977-07-01	29091200000.000000
1977-10-01	30641100000.000000
1978-01-01	30944300000.000000
1978-04-01	37026100000.000000
1978-07-01	35263300000.000000
1978-10-01	40339200000.000000
1979-01-01	41072100000.000000
1979-04-01	44416800000.000000
1979-07-01	44629000000.000000
1979-10-01	51532900000.000000
1980-01-01	52999100000.000000
1980-04-01	56589900000.000000
1980-07-01	52927200000.000000
1980-10-01	58109900000.000000
1981-01-01	59717900000.000000
1981-04-01	60750100000.000000
1981-07-01	55145500000.000000
1981-10-01	58063500000.000000
1982-01-01	55295100000.000000
1982-04-01	57010900000.000000
1982-07-01	50214700000.000000
1982-10-01	49672600000.000000
1983-01-01	50059600000.000000
1983-04-01	50491400000.000000
1983-07-01	48376800000.000000
1983-10-01	51558000000.000000
1984-01-01	53163300000.000000
1984-04-01	55643300000.000000
1984-07-01	53288500000.000000
1984-10-01	56627700000.000000
1985-01-01	55039100000.000000
1985-04-01	54967400000.000000
1985-07-01	49744400000.000000
1985-10-01	53028000000.000000
1986-01-01	55084700000.000000
1986-04-01	59006600000.000000
1986-07-01	53937900000.000000
1986-10-01	59129300000.000000
1987-01-01	58035300000.000000
1987-04-01	63073900000.000000
1987-07-01	62641800000.000000
1987-10-01	70370900000.000000
1988-01-01	76820000000.000000
1988-04-01	81723000000.000000
1988-07-01	78792000000.000000
1988-10-01	85091400000.000000
1989-01-01	88710700000.000000
1989-04-01	94368500000.000000
1989-07-01	87823100000.000000
1989-10-01	92909200000.000000
1990-01-01	97596500000.000000
1990-04-01	100626000000.000000
1990-07-01	93903400000.000000
1990-10-01	101466300000.000000
1991-01-01	102759500000.000000
1991-04-01	107640400000.000000
1991-07-01	101467900000.000000
1991-10-01	109862200000.000000
1992-01-01	111229000000.000000
1992-04-01	112984000000.000000
1992-07-01	107628000000.000000
1992-10-01	116322000000.000000
1993-01-01	114027000000.000000
1993-04-01	117914000000.000000
1993-07-01	110297000000.000000
1993-10-01	122854000000.000000
1994-01-01	120826000000.000000
1994-04-01	127227000000.000000
1994-07-01	126573000000.000000
1994-10-01	138001000000.000000
1995-01-01	141211000000.000000
1995-04-01	147056000000.000000
1995-07-01	143085000000.000000
1995-10-01	153391000000.000000
1996-01-01	153831000000.000000
1996-04-01	157052000000.000000
1996-07-01	149771000000.000000
1996-10-01	164418000000.000000
1997-01-01	164945000000.000000
1997-04-01	174967000000.000000
1997-07-01	169041000000.000000
1997-10-01	180230000000.000000
1998-01-01	172703000000.000000
1998-04-01	170341000000.000000
1998-07-01	160624000000.000000
1998-10-01	178470000000.000000
1999-01-01	166604000000.000000
1999-04-01	171597000000.000000
1999-07-01	169868000000.000000
1999-10-01	187729000000.000000
2000-01-01	187806000000.000000
2000-04-01	195977000000.000000
2000-07-01	195675000000.000000
2000-10-01	202460000000.000000
2001-01-01	195262000000.000000
2001-04-01	190279000000.000000
2001-07-01	169954000000.000000
2001-10-01	173604000000.000000
2002-01-01	166456000000.000000
2002-04-01	177950000000.000000
2002-07-01	171800000000.000000
2002-10-01	176895000000.000000
2003-01-01	174295000000.000000
2003-04-01	180715000000.000000
2003-07-01	175920000000.000000
2003-10-01	193840000000.000000
2004-01-01	196696000000.000000
2004-04-01	206132000000.000000
2004-07-01	201372000000.000000
2004-10-01	214576000000.000000
2005-01-01	214723000000.000000
2005-04-01	230549000000.000000
2005-07-01	222363000000.000000
2005-10-01	238341000000.000000
2006-01-01	244654000000.000000
2006-04-01	261464999999.999970
2006-07-01	257659000000.000000
2006-10-01	272856000000.000000
2007-01-01	268384000000.000000
2007-04-01	285489000000.000000
2007-07-01	287383000000.000000
2007-10-01	306942000000.000000
2008-01-01	314349000000.000000
2008-04-01	339271000000.000000
2008-07-01	337012000000.000000
2008-10-01	296810000000.000000
2009-01-01	246348000000.000000
2009-04-01	251303000000.000000
2009-07-01	264408000000.000030
2009-10-01	293984000000.000000
2010-01-01	296966000000.000000
2010-04-01	315122000000.000000
2010-07-01	318547000000.000000
2010-10-01	347630000000.000000
2011-01-01	351449000000.000000
2011-04-01	371160000000.000000
2011-07-01	374010000000.000000
2011-10-01	383672000000.000000
2012-01-01	381714000000.000000
2012-04-01	391225000000.000000
2012-07-01	378239000000.000000
2012-10-01	394525000000.000000
2013-01-01	383127000000.000000
2013-04-01	396931000000.000000
2013-07-01	388229000000.000000
2013-10-01	410154000000.000000
2014-01-01	392428000000.000000
2014-04-01	410506000000.000000
2014-07-01	404323000000.000000
2014-10-01	413913000000.000000
2015-01-01	372781000000.000000
2015-04-01	387620000000.000000
2015-07-01	371776000000.000000
2015-10-01	370925000000.000000
2016-01-01	346814000000.000000
2016-04-01	363387000000.000000
2016-07-01	362882000000.000000
2016-10-01	377939000000.000000
2017-01-01	372615000000.000000
2017-04-01	384365000000.000000
2017-07-01	381604000000.000000
2017-10-01	407690000000.000000
2018-01-01	402440000000.000000
2018-04-01	427375000000.000000
2018-07-01	412472000000.000000