Quarter	Millions of US Dollars
1962-10-01	0
1963-01-01	0
1963-04-01	0
1963-07-01	0
1963-10-01	0
1964-01-01	0
1964-04-01	0
1964-07-01	0
1964-10-01	0
1965-01-01	0
1965-04-01	0
1965-07-01	0
1965-10-01	0
1966-01-01	0
1966-04-01	0
1966-07-01	0
1966-10-01	0
1967-01-01	0
1967-04-01	0
1967-07-01	0
1967-10-01	0
1968-01-01	0
1968-04-01	0
1968-07-01	0
1968-10-01	0
1969-01-01	0
1969-04-01	0
1969-07-01	0
1969-10-01	0
1970-01-01	0
1970-04-01	0
1970-07-01	0
1970-10-01	0
1971-01-01	0
1971-04-01	0
1971-07-01	0
1971-10-01	0
1972-01-01	0
1972-04-01	0
1972-07-01	0
1972-10-01	0
1973-01-01	0
1973-04-01	36
1973-07-01	46
1973-10-01	41
1974-01-01	41
1974-04-01	10
1974-07-01	0
1974-10-01	0
1975-01-01	39
1975-04-01	48
1975-07-01	136
1975-10-01	180
1976-01-01	667
1976-04-01	713
1976-07-01	748
1976-10-01	817
1977-01-01	465
1977-04-01	452
1977-07-01	474
1977-10-01	656
1978-01-01	1654
1978-04-01	2293
1978-07-01	4053
1978-10-01	5657
1979-01-01	5675
1979-04-01	6863
1979-07-01	7665
1979-10-01	8680
1980-01-01	8623
1980-04-01	10475
1980-07-01	10138
1980-10-01	10473
1981-01-01	12639
1981-04-01	14033
1981-07-01	15345
1981-10-01	16253
1982-01-01	16937
1982-04-01	17045
1982-07-01	18006
1982-10-01	19284
1983-01-01	19103
1983-04-01	19619
1983-07-01	20291
1983-10-01	20312
1984-01-01	24400
1984-04-01	24656
1984-07-01	30246
1984-10-01	52276
1985-01-01	55360
1985-04-01	62239
1985-07-01	68042
1985-10-01	61209
1986-01-01	64010
1986-04-01	67971
1986-07-01	72062
1986-10-01	70956
1987-01-01	77415
1987-04-01	77234
1987-07-01	77468
1987-10-01	88102
1988-01-01	86383
1988-04-01	86592
1988-07-01	89120
1988-10-01	93407
1989-01-01	92861
1989-04-01	97144
1989-07-01	100655
1989-10-01	106540
1990-01-01	117158
1990-04-01	122051
1990-07-01	131681
1990-10-01	149171
1991-01-01	159101
1991-04-01	175450
1991-07-01	202228
1991-10-01	210360
1992-01-01	223507
1992-04-01	263696
1992-07-01	291258
1992-10-01	291799
1993-01-01	283792
1993-04-01	252485
1993-07-01	352561
1993-10-01	338098
1994-01-01	337905
1994-04-01	343269
1994-07-01	357463
1994-10-01	364904
1995-01-01	400716
1995-04-01	432200
1995-07-01	449760
1995-10-01	474382
1996-01-01	485539
1996-04-01	502729
1996-07-01	442867
1996-10-01	557505
1997-01-01	561274
1997-04-01	582661
1997-07-01	588555
1997-10-01	604535
1998-01-01	626351
1998-04-01	624349
1998-07-01	660796
1998-10-01	668175
1999-01-01	678251
1999-04-01	719986
1999-07-01	820838
1999-10-01	838143
2000-01-01	885585
2000-04-01	981585
2000-07-01	970335
2000-10-01	1083965
2001-01-01	1100757
2001-04-01	1056755
2001-07-01	1110584
2001-10-01	1125639
2002-01-01	1216273
2002-04-01	1362601
2002-07-01	1388355
2002-10-01	1438631
2003-01-01	1516039
2003-04-01	1621021
2003-07-01	1654812
2003-10-01	1813479
2004-01-01	1833364
2004-04-01	1855372
2004-07-01	1953073
2004-10-01	2099877
2005-01-01	2121613
2005-04-01	2084104
2005-07-01	2107916
2005-10-01	2168648
2006-01-01	2308010
2006-04-01	2382789
2006-07-01	2436479
2006-10-01	2493042
2007-01-01	2671515
2007-04-01	2856707
2007-07-01	2971817
2007-10-01	3139478
2008-01-01	3500399
2008-04-01	3589984
2008-07-01	3353095
2008-10-01	3099341
2009-01-01	2946850
2009-04-01	3114078
2009-07-01	3271275
2009-10-01	3184102
2010-01-01	3193827
2010-04-01	3060955
2010-07-01	3258637
2010-10-01	3211000
2011-01-01	3490011
2011-04-01	3559978
2011-07-01	3493190
2011-10-01	3421707
2012-01-01	3558568
2012-04-01	3384735
2012-07-01	3395647
2012-10-01	3439143
2013-01-01	3396054
2013-04-01	3502864
2013-07-01	3628615
2013-10-01	3682757
2014-01-01	3620619
2014-04-01	3509138
2014-07-01	3432808
2014-10-01	3387160
2015-01-01	3181950
2015-04-01	3276009
2015-07-01	3268771
2015-10-01	3173209
2016-01-01	3457645
2016-04-01	3504457
2016-07-01	3515899
2016-10-01	3395477
2017-01-01	3318670
2017-04-01	3328060
2017-07-01	3275338
2017-10-01	3270265
2018-01-01	3332829
2018-04-01	3257157