Quarter	Millions of US Dollars
1957-10-01	2340
1958-10-01	2419
1959-10-01	2574
1960-01-01	2532
1960-04-01	2555
1960-07-01	2587
1960-10-01	2596
1961-01-01	2544
1961-04-01	2500
1961-07-01	2658
1961-10-01	2692
1962-01-01	2706
1962-04-01	2841
1962-07-01	2969
1962-10-01	3017
1963-01-01	3048
1963-04-01	3134
1963-07-01	3192
1963-10-01	3241
1964-01-01	3288
1964-04-01	3392
1964-07-01	3430
1964-10-01	3459
1965-01-01	3654
1965-04-01	3649
1965-07-01	3646
1965-10-01	3857
1966-01-01	3942
1966-04-01	4236
1966-07-01	4477
1966-10-01	4532
1967-01-01	4510
1967-04-01	4643
1967-07-01	4824
1967-10-01	4907
1968-01-01	5035
1968-04-01	5316
1968-07-01	5550
1968-10-01	5564
1969-01-01	5737
1969-04-01	5994
1969-07-01	5992
1969-10-01	6010
1970-01-01	6030
1970-04-01	6085
1970-07-01	6217
1970-10-01	6184
1971-01-01	6074
1971-04-01	6449
1971-07-01	6593
1971-10-01	6204
1972-01-01	6456
1972-04-01	6905
1972-07-01	6933
1972-10-01	7106
1973-01-01	8101
1973-04-01	9271
1973-07-01	9340
1973-10-01	9202
1974-01-01	9382
1974-04-01	9372
1974-07-01	9025
1974-10-01	9440
1975-01-01	10167
1975-04-01	10111
1975-07-01	8548
1975-10-01	9171
1976-01-01	9527
1976-04-01	9873
1976-07-01	9913
1976-10-01	10456
1977-01-01	10521
1977-04-01	11098
1977-07-01	11923
1977-10-01	12370
1978-01-01	12718
1978-04-01	13919
1978-07-01	14225
1978-10-01	14504
1979-01-01	14840
1979-04-01	15311
1979-07-01	15738
1979-10-01	16694
1980-01-01	16569
1980-04-01	18547
1980-07-01	19604
1980-10-01	20742
1981-01-01	18635
1981-04-01	18263
1981-07-01	17401
1981-10-01	17766
1982-01-01	16605
1982-04-01	16770
1982-07-01	17236
1982-10-01	19520
1983-01-01	19141
1983-04-01	20795
1983-07-01	21190
1983-10-01	19196
1984-01-01	19307
1984-04-01	19569
1984-07-01	15801
1984-10-01	14065
1985-01-01	15156
1985-04-01	16324
1985-07-01	12357
1985-10-01	12754
1986-01-01	15598
1986-04-01	14768
1986-07-01	17198
1986-10-01	17907
1987-01-01	19778
1987-04-01	20969
1987-07-01	21405
1987-10-01	24112
1988-01-01	22247
1988-04-01	22459
1988-07-01	22599
1988-10-01	24625
1989-01-01	23876
1989-04-01	24333
1989-07-01	26623
1989-10-01	29354
1990-01-01	27596
1990-04-01	28951
1990-07-01	31367
1990-10-01	32516
1991-01-01	31625
1991-04-01	32837
1991-07-01	34768
1991-10-01	37615
1992-01-01	36310
1992-04-01	43344
1992-07-01	45704
1992-10-01	42863
1993-01-01	43748
1993-04-01	47086
1993-07-01	48687
1993-10-01	49445
1994-01-01	52285
1994-04-01	53684
1994-07-01	57026
1994-10-01	59834
1995-01-01	60254
1995-04-01	63150
1995-07-01	67210
1995-10-01	68082
1996-01-01	65029
1996-04-01	61722
1996-07-01	61591
1996-10-01	60214
1997-01-01	65533
1997-04-01	66740
1997-07-01	65661
1997-10-01	64367
1998-01-01	63264
1998-04-01	55727
1998-07-01	57370
1998-10-01	57580
1999-01-01	55688
1999-04-01	58073
1999-07-01	59291
1999-10-01	57096
2000-01-01	53894
2000-04-01	53311
2000-07-01	50539
2000-10-01	48199
2001-01-01	62432
2001-04-01	63679
2001-07-01	58075
2001-10-01	44301
2002-01-01	43183
2002-04-01	48161
2002-07-01	48307
2002-10-01	58385
2003-01-01	64350
2003-04-01	70644
2003-07-01	79609
2003-10-01	86597
2004-01-01	88955
2004-04-01	93826
2004-07-01	97370
2004-10-01	117492
2005-01-01	105328
2005-04-01	104073
2005-07-01	111663
2005-10-01	114906
2006-01-01	116274
2006-04-01	104403
2006-07-01	103217
2006-10-01	117573
2007-01-01	112449
2007-04-01	119460
2007-07-01	126966
2007-10-01	131481
2008-01-01	108557
2008-04-01	117272
2008-07-01	116342
2008-10-01	104895
2009-01-01	106852
2009-04-01	137459
2009-07-01	148621
2009-10-01	156272
2010-01-01	166296
2010-04-01	169515
2010-07-01	191912
2010-10-01	209697
2011-01-01	215076
2011-04-01	221843
2011-07-01	193478
2011-10-01	198618
2012-01-01	218141
2012-04-01	212525
2012-07-01	217663
2012-10-01	219262
2013-01-01	205913
2013-04-01	197915
2013-07-01	202548
2013-10-01	198819
2014-01-01	202444
2014-04-01	211140
2014-07-01	201221
2014-10-01	203208
2015-01-01	196116
2015-04-01	201771
2015-07-01	180228
2015-10-01	164473
2016-01-01	176389
2016-04-01	181005
2016-07-01	196706
2016-10-01	203864
2017-01-01	213353
2017-04-01	223835
2017-07-01	222485
2017-10-01	250392
2018-01-01	265385