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 25
1976-04-01 41
1976-07-01 17
1977-01-01 30
1977-04-01 20
1977-07-01 143
1977-10-01 111
1978-04-01 47
1979-04-01 96
1980-01-01 -25
1980-04-01 50
1980-07-01 12
1981-01-01 -30
1981-04-01 -92
1982-07-01 -27
1982-10-01 -20
1983-01-01 -60
1983-04-01 -60
1983-07-01 -35
1983-10-01 -17
1984-04-01 -51
1984-07-01 50
1984-10-01 -1
1985-01-01 170
1985-04-01 -22
1985-07-01 152
1985-10-01 -57
1986-01-01 162
1986-04-01 386
1986-07-01 72
1986-10-01 104
1987-01-01 354
1987-04-01 -5
1987-07-01 -3
1987-10-01 391
1988-01-01 766
1988-04-01 455
1988-07-01 541
1988-10-01 668
1989-01-01 920
1989-04-01 293
1989-07-01 1303
1989-10-01 497
1990-01-01 750
1990-04-01 268
1990-07-01 458
1990-10-01 460
1991-01-01 128
1991-04-01 321
1991-07-01 100
1991-10-01 1417
1992-01-01 819
1992-04-01 282
1992-07-01 1252
1992-10-01 913
1993-01-01 2317
1993-04-01 1272
1993-07-01 2003
1993-10-01 2211
1994-01-01 1360
1994-04-01 297
1994-07-01 5586
1994-10-01 6485
1995-01-01 -811
1995-04-01 388
1995-07-01 1748
1995-10-01 848
1996-01-01 432
1996-04-01 2004
1996-07-01 -1893
1996-10-01 375
1997-01-01 2664
1997-04-01 4834
1997-07-01 4643
1997-10-01 2317
1998-01-01 2445
1998-04-01 5619
1998-07-01 6076
1998-10-01 -1192
1999-01-01 1157
1999-04-01 680
1999-07-01 -56
1999-10-01 3922
2000-01-01 2339
2000-04-01 2948
2000-07-01 20927
2000-10-01 -605
2001-01-01 1787
2001-04-01 420
2001-07-01 -43
2001-10-01 1248
2002-01-01 1138
2002-04-01 297
2002-07-01 759
2002-10-01 1190
2003-01-01 5323
2003-04-01 888
2003-07-01 4322
2003-10-01 2930
2004-01-01 3723
2004-04-01 8189
2004-07-01 4468
2004-10-01 4979
2005-01-01 11056
2005-04-01 16898
2005-07-01 758
2005-10-01 10386
2006-01-01 12106
2006-04-01 2453
2006-07-01 8515
2006-10-01 20905
2007-01-01 15859
2007-04-01 18142
2007-07-01 1350
2007-10-01 12884
2008-01-01 -1491
2008-04-01 22461
2008-07-01 5793
2008-10-01 -5174
2009-01-01 -2312
2009-04-01 7163
2009-07-01 5638
2009-10-01 7393
2010-01-01 9855
2010-04-01 8287
2010-07-01 17605
2010-10-01 18212
2011-01-01 14568
2011-04-01 14436
2011-07-01 -718
2011-10-01 1162
2012-01-01 17135
2012-04-01 24898
2012-07-01 41341
2012-10-01 36175
2013-01-01 15609
2013-04-01 22381
2013-07-01 10693
2013-10-01 26309
2014-01-01 -8601
2014-04-01 -376
2014-07-01 1633
2014-10-01 7800
2015-01-01 -1810
2015-04-01 -6053
2015-07-01 -7678
2015-10-01 -21737
2016-01-01 -2485
2016-04-01 9424
2016-07-01 -6654
2016-10-01 13941
2017-01-01 -581
2017-04-01 7593
2017-07-01 6944
2017-10-01 4752
2018-01-01 -2170
2018-04-01 -18862