Quarterly Millions of US Dollars
1972-07-01 50
1973-04-01 30
1974-04-01 52
1975-01-01 60
1975-04-01 80
1975-10-01 19
1976-01-01 42
1976-04-01 71
1976-07-01 17
1976-10-01 35
1977-01-01 70
1977-04-01 20
1977-07-01 150
1977-10-01 111
1978-04-01 77
1979-04-01 121
1979-07-01 56
1980-01-01 -25
1980-04-01 50
1980-07-01 12
1981-01-01 -30
1981-04-01 -122
1981-10-01 -35
1982-07-01 -34
1982-10-01 -20
1983-01-01 -60
1983-04-01 -60
1983-07-01 -35
1983-10-01 -17
1984-04-01 -70
1984-07-01 25
1984-10-01 -1
1985-01-01 170
1985-04-01 -22
1985-07-01 152
1985-10-01 -83
1986-01-01 173
1986-04-01 386
1986-07-01 72
1986-10-01 85
1987-01-01 404
1987-04-01 -33
1987-07-01 -4
1987-10-01 391
1988-01-01 766
1988-04-01 452
1988-07-01 541
1988-10-01 668
1989-01-01 893
1989-04-01 293
1989-07-01 1278
1989-10-01 497
1990-01-01 750
1990-04-01 268
1990-07-01 477
1990-10-01 682
1991-01-01 128
1991-04-01 321
1991-07-01 100
1991-10-01 1417
1992-01-01 802
1992-04-01 282
1992-07-01 1252
1992-10-01 900
1993-01-01 2317
1993-04-01 1272
1993-07-01 2176
1993-10-01 2211
1994-01-01 1360
1994-04-01 297
1994-07-01 5577
1994-10-01 6418
1995-01-01 -750
1995-04-01 392
1995-07-01 1580
1995-10-01 572
1996-01-01 338
1996-04-01 1977
1996-07-01 -2025
1996-10-01 241
1997-01-01 2256
1997-04-01 4509
1997-07-01 3195
1997-10-01 500
1998-01-01 2437
1998-04-01 5730
1998-07-01 5543
1998-10-01 -1914
1999-01-01 1251
1999-04-01 466
1999-07-01 -439
1999-10-01 2817
2000-01-01 1970
2000-04-01 3344
2000-07-01 21361
2000-10-01 -628
2001-01-01 933
2001-04-01 198
2001-07-01 30
2001-10-01 913
2002-01-01 1267
2002-04-01 650
2002-07-01 934
2002-10-01 1448
2003-01-01 5248
2003-04-01 393
2003-07-01 3354
2003-10-01 1401
2004-01-01 2706
2004-04-01 6226
2004-07-01 3028
2004-10-01 3182
2005-01-01 8710
2005-04-01 10914
2005-07-01 -3689
2005-10-01 5018
2006-01-01 9538
2006-04-01 -754
2006-07-01 5331
2006-10-01 11456
2007-01-01 10489
2007-04-01 5297
2007-07-01 147
2007-10-01 2797
2008-01-01 -1811
2008-04-01 13570
2008-07-01 6427
2008-10-01 -1841
2009-01-01 -727
2009-04-01 6233
2009-07-01 1691
2009-10-01 7606
2010-01-01 5198
2010-04-01 8863
2010-07-01 10363
2010-10-01 4706
2011-01-01 13492
2011-04-01 11793
2011-07-01 1013
2011-10-01 429
2012-01-01 11978
2012-04-01 21729
2012-07-01 21838
2012-10-01 32633
2013-01-01 8971
2013-04-01 18946
2013-07-01 8210
2013-10-01 26864
2014-01-01 -5882
2014-04-01 6656
2014-07-01 5462
2014-10-01 7647
2015-01-01 3498
2015-04-01 -1156
2015-07-01 -4931
2015-10-01 -18731
2016-01-01 935
2016-04-01 10038
2016-07-01 -3235
2016-10-01 9457
2017-01-01 5260
2017-04-01 9514
2017-07-01 9660
2017-10-01 9917
2018-01-01 4644
2018-04-01 -11695