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	0
1973-07-01	0
1973-10-01	0
1974-01-01	0
1974-04-01	0
1974-07-01	0
1974-10-01	0
1975-01-01	0
1975-04-01	0
1975-07-01	0
1975-10-01	0
1976-01-01	0
1976-04-01	0
1976-07-01	0
1976-10-01	0
1977-01-01	0
1977-04-01	0
1977-07-01	0
1977-10-01	0
1978-01-01	0
1978-04-01	0
1978-07-01	0
1978-10-01	0
1979-01-01	0
1979-04-01	0
1979-07-01	0
1979-10-01	0
1980-01-01	0
1980-04-01	0
1980-07-01	0
1980-10-01	10
1981-01-01	10
1981-04-01	8
1981-07-01	21
1981-10-01	28
1982-01-01	42
1982-04-01	40
1982-07-01	28
1982-10-01	20
1983-01-01	5
1983-04-01	17
1983-07-01	16
1983-10-01	16
1984-01-01	16
1984-04-01	4
1984-07-01	4
1984-10-01	51
1985-01-01	52
1985-04-01	58
1985-07-01	68
1985-10-01	32
1986-01-01	49
1986-04-01	50
1986-07-01	52
1986-10-01	50
1987-01-01	52
1987-04-01	43
1987-07-01	40
1987-10-01	36
1988-01-01	43
1988-04-01	50
1988-07-01	45
1988-10-01	53
1989-01-01	63
1989-04-01	51
1989-07-01	94
1989-10-01	89
1990-01-01	178
1990-04-01	241
1990-07-01	321
1990-10-01	511
1991-01-01	417
1991-04-01	525
1991-07-01	453
1991-10-01	412
1992-01-01	351
1992-04-01	296
1992-07-01	473
1992-10-01	526
1993-01-01	544
1993-04-01	589
1993-07-01	865
1993-10-01	835
1994-01-01	727
1994-04-01	524
1994-07-01	658
1994-10-01	661
1995-01-01	894
1995-04-01	916
1995-07-01	970
1995-10-01	998
1996-01-01	1302
1996-04-01	1340
1996-07-01	1043
1996-10-01	1013
1997-01-01	727
1997-04-01	572
1997-07-01	883
1997-10-01	783
1998-01-01	1045
1998-04-01	1103
1998-07-01	995
1998-10-01	1105
1999-01-01	1024
1999-04-01	1304
1999-07-01	1657
1999-10-01	1591
2000-01-01	1423
2000-04-01	2162
2000-07-01	2278
2000-10-01	2036
2001-01-01	2284
2001-04-01	1529
2001-07-01	1785
2001-10-01	2427
2002-01-01	1922
2002-04-01	3183
2002-07-01	2915
2002-10-01	3217
2003-01-01	4687
2003-04-01	4803
2003-07-01	4386
2003-10-01	5188
2004-01-01	5184
2004-04-01	6066
2004-07-01	6977
2004-10-01	7973
2005-01-01	8138
2005-04-01	7571
2005-07-01	8233
2005-10-01	8986
2006-01-01	10517
2006-04-01	11242
2006-07-01	11417
2006-10-01	13661
2007-01-01	13209
2007-04-01	13447
2007-07-01	12421
2007-10-01	12165
2008-01-01	13791
2008-04-01	12964
2008-07-01	12571
2008-10-01	13592
2009-01-01	14352
2009-04-01	15004
2009-07-01	15632
2009-10-01	13940
2010-01-01	10438
2010-04-01	9462
2010-07-01	8584
2010-10-01	9310
2011-01-01	11172
2011-04-01	10938
2011-07-01	11618
2011-10-01	9919
2012-01-01	9756
2012-04-01	9555
2012-07-01	6778
2012-10-01	4938
2013-01-01	2732
2013-04-01	1341
2013-07-01	1089
2013-10-01	1181
2014-01-01	1614
2014-04-01	2332
2014-07-01	3398
2014-10-01	3090
2015-01-01	2487
2015-04-01	5317
2015-07-01	3437
2015-10-01	4052
2016-01-01	4502
2016-04-01	1731
2016-07-01	1548
2016-10-01	805
2017-01-01	727
2017-04-01	669
2017-07-01	715
2017-10-01	801
2018-01-01	779
2018-04-01	1124