Quarter	Millions of US Dollars
1957-10-01	2004
1958-10-01	2068
1959-10-01	2241
1960-01-01	2261
1960-04-01	2303
1960-07-01	2323
1960-10-01	2344
1961-01-01	2347
1961-04-01	2304
1961-07-01	2392
1961-10-01	2399
1962-01-01	2462
1962-04-01	2612
1962-07-01	2660
1962-10-01	2718
1963-01-01	2751
1963-04-01	2837
1963-07-01	2925
1963-10-01	2970
1964-01-01	3060
1964-04-01	3144
1964-07-01	3229
1964-10-01	3258
1965-01-01	3392
1965-04-01	3446
1965-07-01	3489
1965-10-01	3573
1966-01-01	3691
1966-04-01	3914
1966-07-01	4030
1966-10-01	4173
1967-01-01	4321
1967-04-01	4420
1967-07-01	4530
1967-10-01	4642
1968-01-01	4839
1968-04-01	5069
1968-07-01	5275
1968-10-01	5309
1969-01-01	5564
1969-04-01	5805
1969-07-01	5836
1969-10-01	5807
1970-01-01	5916
1970-04-01	5940
1970-07-01	6065
1970-10-01	6078
1971-01-01	5965
1971-04-01	6340
1971-07-01	6470
1971-10-01	6103
1972-01-01	6368
1972-04-01	6767
1972-07-01	6747
1972-10-01	6953
1973-01-01	7865
1973-04-01	8855
1973-07-01	8858
1973-10-01	8787
1974-01-01	8869
1974-04-01	8914
1974-07-01	8615
1974-10-01	8880
1975-01-01	9529
1975-04-01	9386
1975-07-01	7848
1975-10-01	8333
1976-01-01	8723
1976-04-01	8911
1976-07-01	9073
1976-10-01	9559
1977-01-01	9688
1977-04-01	10332
1977-07-01	11025
1977-10-01	11472
1978-01-01	11890
1978-04-01	13023
1978-07-01	13326
1978-10-01	13717
1979-01-01	14068
1979-04-01	14480
1979-07-01	14950
1979-10-01	15221
1980-01-01	15770
1980-04-01	17074
1980-07-01	18143
1980-10-01	19049
1981-01-01	18141
1981-04-01	17557
1981-07-01	16794
1981-10-01	17017
1982-01-01	15942
1982-04-01	15945
1982-07-01	16501
1982-10-01	18719
1983-01-01	18428
1983-04-01	19643
1983-07-01	20438
1983-10-01	18842
1984-01-01	18959
1984-04-01	18251
1984-07-01	15153
1984-10-01	13531
1985-01-01	14705
1985-04-01	15442
1985-07-01	12115
1985-10-01	12469
1986-01-01	15256
1986-04-01	14182
1986-07-01	16576
1986-10-01	17357
1987-01-01	19399
1987-04-01	20113
1987-07-01	20955
1987-10-01	23722
1988-01-01	22147
1988-04-01	22264
1988-07-01	22492
1988-10-01	24591
1989-01-01	23773
1989-04-01	23575
1989-07-01	25451
1989-10-01	28437
1990-01-01	26878
1990-04-01	28449
1990-07-01	30210
1990-10-01	30977
1991-01-01	30619
1991-04-01	31003
1991-07-01	33375
1991-10-01	36419
1992-01-01	34928
1992-04-01	41299
1992-07-01	42605
1992-10-01	39985
1993-01-01	41909
1993-04-01	45192
1993-07-01	46398
1993-10-01	47010
1994-01-01	50193
1994-04-01	51403
1994-07-01	54932
1994-10-01	57730
1995-01-01	58301
1995-04-01	61275
1995-07-01	65072
1995-10-01	65943
1996-01-01	62341
1996-04-01	58838
1996-07-01	58678
1996-10-01	57421
1997-01-01	62300
1997-04-01	63195
1997-07-01	61775
1997-10-01	60690
1998-01-01	59830
1998-04-01	52661
1998-07-01	53831
1998-10-01	54326
1999-01-01	52618
1999-04-01	54808
1999-07-01	56029
1999-10-01	53800
2000-01-01	50552
2000-04-01	49076
2000-07-01	46497
2000-10-01	44339
2001-01-01	42565
2001-04-01	42771
2001-07-01	38834
2001-10-01	29948
2002-01-01	29083
2002-04-01	32499
2002-07-01	32621
2002-10-01	38717
2003-01-01	41386
2003-04-01	45719
2003-07-01	51512
2003-10-01	56233
2004-01-01	56577
2004-04-01	60678
2004-07-01	61449
2004-10-01	72477
2005-01-01	63544
2005-04-01	62398
2005-07-01	66971
2005-10-01	68944
2006-01-01	67783
2006-04-01	59980
2006-07-01	57467
2006-10-01	64552
2007-01-01	58266
2007-04-01	61041
2007-07-01	63761
2007-10-01	65232
2008-01-01	52476
2008-04-01	56583
2008-07-01	55368
2008-10-01	50262
2009-01-01	49672
2009-04-01	64821
2009-07-01	69994
2009-10-01	75594
2010-01-01	81452
2010-04-01	83783
2010-07-01	96257
2010-10-01	107427
2011-01-01	110753
2011-04-01	116372
2011-07-01	102278
2011-10-01	106512
2012-01-01	117936
2012-04-01	115393
2012-07-01	120188
2012-10-01	122762
2013-01-01	114064
2013-04-01	110572
2013-07-01	114847
2013-10-01	114350
2014-01-01	116601
2014-04-01	122332
2014-07-01	117282
2014-10-01	119078
2015-01-01	116120
2015-04-01	120511
2015-07-01	108259
2015-10-01	99154
2016-01-01	107841
2016-04-01	111603
2016-07-01	121167
2016-10-01	125960
2017-01-01	131387
2017-04-01	138574
2017-07-01	136820
2017-10-01	154436
2018-01-01	166262