Quarterly Millions of US Dollars
1971-01-01 25
1973-01-01 30
1973-07-01 50
1974-04-01 52
1974-10-01 36
1975-04-01 34
1975-10-01 38
1976-07-01 20
1977-07-01 57
1978-04-01 83
1979-04-01 39
1979-07-01 31
1979-10-01 -43
1980-01-01 86
1980-10-01 95
1981-01-01 100
1981-04-01 100
1981-07-01 -72
1981-10-01 342
1982-01-01 200
1982-04-01 103
1982-07-01 90
1982-10-01 30
1983-01-01 275
1983-04-01 78
1983-07-01 34
1983-10-01 550
1984-01-01 67
1984-04-01 59
1984-07-01 349
1984-10-01 158
1985-01-01 398
1985-04-01 200
1985-07-01 142
1985-10-01 222
1986-01-01 395
1986-04-01 529
1986-07-01 1008
1986-10-01 97
1987-01-01 -202
1987-04-01 189
1987-07-01 -126
1987-10-01 -354
1988-01-01 122
1988-04-01 230
1988-07-01 -355
1988-10-01 -90
1989-01-01 -242
1989-04-01 254
1989-10-01 -54
1990-01-01 257
1990-04-01 249
1990-07-01 -163
1991-01-01 61
1991-04-01 558
1991-07-01 -86
1991-10-01 -56
1992-01-01 101
1992-04-01 -261
1992-07-01 372
1992-10-01 754
1993-01-01 1585
1993-04-01 -253
1993-07-01 39
1993-10-01 -207
1994-01-01 -611
1994-04-01 359
1994-07-01 -198
1994-10-01 -514
1995-01-01 205
1995-04-01 87
1995-07-01 1
1995-10-01 -211
1996-01-01 -935
1996-04-01 -370
1996-07-01 -119
1996-10-01 -91
1997-01-01 -302
1997-04-01 -401
1997-10-01 -388
1998-01-01 -30
1998-04-01 -191
1998-10-01 -267
1999-01-01 586
1999-04-01 -515
1999-07-01 -938
1999-10-01 777
2000-01-01 145
2000-04-01 561
2000-07-01 -2092
2000-10-01 214
2001-01-01 -457
2001-04-01 -703
2001-07-01 1451
2001-10-01 3457
2002-01-01 -880
2002-04-01 -716
2002-07-01 -1143
2002-10-01 572
2003-01-01 -689
2003-04-01 535
2003-07-01 -2109
2003-10-01 -1731
2004-01-01 -414
2004-04-01 -1315
2004-07-01 -647
2004-10-01 -225
2005-01-01 -52
2005-04-01 -147
2006-01-01 5
2006-04-01 -5
2007-04-01 967
2007-07-01 11081
2007-10-01 -11386
2008-01-01 6068
2008-04-01 493
2008-07-01 10375
2008-10-01 10159
2009-01-01 -3791
2009-04-01 3914
2009-07-01 -9535
2009-10-01 -6347
2010-01-01 5501
2010-04-01 847
2010-07-01 2258
2010-10-01 -4766
2011-01-01 -321
2011-04-01 -76
2011-07-01 85
2011-10-01 -265
2012-01-01 669
2012-04-01 323
2012-07-01 147
2012-10-01 84
2013-01-01 3449
2013-04-01 425
2013-07-01 -1369
2013-10-01 -336
2014-01-01 5233
2014-04-01 -225
2014-07-01 1356
2014-10-01 845
2015-01-01 806
2015-04-01 -687
2015-07-01 -141
2015-10-01 -1590
2016-01-01 1443
2016-04-01 -595
2016-07-01 994
2016-10-01 -2430
2017-01-01 1467
2017-04-01 2368
2017-07-01 -1086
2017-10-01 -4480
2018-01-01 3170
2018-04-01 60