Quarter	Millions of US Dollars
1962-10-01	5
1963-01-01	5
1963-04-01	5
1963-07-01	5
1963-10-01	5
1964-01-01	5
1964-04-01	5
1964-07-01	5
1964-10-01	5
1965-01-01	5
1965-04-01	5
1965-07-01	5
1965-10-01	5
1966-01-01	20
1966-04-01	20
1966-07-01	20
1966-10-01	20
1967-01-01	20
1967-04-01	45
1967-07-01	45
1967-10-01	45
1968-01-01	45
1968-04-01	50
1968-07-01	50
1968-10-01	50
1969-01-01	77
1969-04-01	95
1969-07-01	95
1969-10-01	95
1970-01-01	95
1970-04-01	95
1970-07-01	170
1970-10-01	170
1971-01-01	267
1971-04-01	279
1971-07-01	339
1971-10-01	387
1972-01-01	568
1972-04-01	1060
1972-07-01	1396
1972-10-01	1656
1973-01-01	1908
1973-04-01	2496
1973-07-01	2692
1973-10-01	2985
1974-01-01	3379
1974-04-01	3646
1974-07-01	3897
1974-10-01	4690
1975-01-01	5671
1975-04-01	7077
1975-07-01	7564
1975-10-01	8944
1976-01-01	10018
1976-04-01	11144
1976-07-01	12951
1976-10-01	14368
1977-01-01	16166
1977-04-01	18184
1977-07-01	19950
1977-10-01	23054
1978-01-01	26762
1978-04-01	29625
1978-07-01	32529
1978-10-01	34967
1979-01-01	37058
1979-04-01	38771
1979-07-01	41001
1979-10-01	42681
1980-01-01	41768
1980-04-01	45908
1980-07-01	46393
1980-10-01	45260
1981-01-01	44134
1981-04-01	43330
1981-07-01	44702
1981-10-01	48503
1982-01-01	49854
1982-04-01	50139
1982-07-01	51369
1982-10-01	54864
1983-01-01	56449
1983-04-01	56329
1983-07-01	56130
1983-10-01	60409
1984-01-01	64159
1984-04-01	65105
1984-07-01	67710
1984-10-01	73995
1985-01-01	75428
1985-04-01	82629
1985-07-01	89230
1985-10-01	93946
1986-01-01	101450
1986-04-01	109661
1986-07-01	119316
1986-10-01	125710
1987-01-01	135029
1987-04-01	135618
1987-07-01	135458
1987-10-01	150935
1988-01-01	150926
1988-04-01	146302
1988-07-01	145687
1988-10-01	147489
1989-01-01	142962
1989-04-01	138986
1989-07-01	141031
1989-10-01	143124
1990-01-01	143279
1990-04-01	147335
1990-07-01	155985
1990-10-01	158657
1991-01-01	161495
1991-04-01	161224
1991-07-01	169385
1991-10-01	178080
1992-01-01	174049
1992-04-01	188831
1992-07-01	198322
1992-10-01	200650
1993-01-01	226696
1993-04-01	237215
1993-07-01	289307
1993-10-01	286827
1994-01-01	309204
1994-04-01	326378
1994-07-01	353965
1994-10-01	362978
1995-01-01	398010
1995-04-01	413168
1995-07-01	408688
1995-10-01	402325
1996-01-01	401929
1996-04-01	403619
1996-07-01	405218
1996-10-01	403834
1997-01-01	389836
1997-04-01	398063
1997-07-01	396226
1997-10-01	376386
1998-01-01	375166
1998-04-01	375451
1998-07-01	388344
1998-10-01	400833
1999-01-01	380692
1999-04-01	377301
1999-07-01	380079
1999-10-01	369805
2000-01-01	365373
2000-04-01	365315
2000-07-01	345245
2000-10-01	344959
2001-01-01	342704
2001-04-01	343105
2001-07-01	354092
2001-10-01	354747
2002-01-01	380018
2002-04-01	403929
2002-07-01	401961
2002-10-01	418274
2003-01-01	459406
2003-04-01	499599
2003-07-01	514659
2003-10-01	539429
2004-01-01	551277
2004-04-01	560340
2004-07-01	563668
2004-10-01	597738
2005-01-01	597414
2005-04-01	587192
2005-07-01	579636
2005-10-01	580588
2006-01-01	612365
2006-04-01	655567
2006-07-01	644693
2006-10-01	662102
2007-01-01	691998
2007-04-01	743015
2007-07-01	768602
2007-10-01	747772
2008-01-01	822424
2008-04-01	841649
2008-07-01	760560
2008-10-01	766712
2009-01-01	771181
2009-04-01	860695
2009-07-01	892634
2009-10-01	876222
2010-01-01	874636
2010-04-01	836682
2010-07-01	931566
2010-10-01	927480
2011-01-01	987897
2011-04-01	1011793
2011-07-01	958901
2011-10-01	925543
2012-01-01	904210
2012-04-01	861399
2012-07-01	849966
2012-10-01	888431
2013-01-01	861402
2013-04-01	852995
2013-07-01	886658
2013-10-01	874178
2014-01-01	873881
2014-04-01	894929
2014-07-01	844305
2014-10-01	825223
2015-01-01	745035
2015-04-01	758536
2015-07-01	756626
2015-10-01	724318
2016-01-01	730355
2016-04-01	699582
2016-07-01	684007
2016-10-01	669570
2017-01-01	662993
2017-04-01	702421
2017-07-01	718888
2017-10-01	714702
2018-01-01	733856
2018-04-01	700936