Quarterly Millions of US Dollars
1971-01-01 40
1971-04-01 40
1972-01-01 96
1972-04-01 96
1972-07-01 24
1972-10-01 25
1973-01-01 74
1973-04-01 12
1974-01-01 82
1974-04-01 22
1974-07-01 56
1974-10-01 129
1975-01-01 450
1975-04-01 228
1975-07-01 267
1975-10-01 322
1976-01-01 542
1976-04-01 507
1976-07-01 304
1976-10-01 236
1977-01-01 200
1977-04-01 84
1977-07-01 42
1977-10-01 366
1978-01-01 202
1978-04-01 192
1978-07-01 -9
1978-10-01 79
1979-01-01 203
1979-04-01 332
1979-07-01 467
1979-10-01 374
1980-01-01 -137
1980-04-01 574
1980-07-01 141
1980-10-01 405
1981-01-01 593
1981-04-01 21
1981-07-01 45
1981-10-01 -145
1982-01-01 236
1982-04-01 679
1982-07-01 455
1982-10-01 881
1983-01-01 619
1983-04-01 171
1983-07-01 -45
1983-10-01 363
1984-01-01 543
1984-04-01 243
1984-07-01 424
1984-10-01 103
1985-01-01 441
1985-04-01 363
1985-07-01 220
1985-10-01 -350
1986-01-01 114
1986-04-01 826
1986-07-01 -219
1986-10-01 684
1987-01-01 214
1987-04-01 59
1987-07-01 -304
1987-10-01 -263
1988-01-01 431
1988-04-01 812
1988-07-01 1856
1988-10-01 84
1989-01-01 342
1989-04-01 1192
1989-07-01 451
1989-10-01 69
1990-01-01 -61
1990-04-01 234
1990-07-01 1070
1990-10-01 321
1991-01-01 483
1991-04-01 41
1991-07-01 398
1991-10-01 1112
1992-01-01 1691
1992-04-01 808
1992-07-01 -14
1992-10-01 2962
1993-01-01 1390
1993-04-01 406
1993-07-01 5431
1993-10-01 105
1994-01-01 468
1994-04-01 78
1994-07-01 120
1994-10-01 1912
1995-01-01 179
1995-04-01 -139
1995-07-01 407
1995-10-01 -5
1996-01-01 824
1996-04-01 446
1996-07-01 366
1996-10-01 -13
1997-01-01 1072
1997-04-01 1936
1997-07-01 309
1997-10-01 -1692
1998-01-01 1262
1998-04-01 2756
1998-07-01 1081
1998-10-01 3541
1999-01-01 5892
1999-04-01 6978
1999-07-01 5188
1999-10-01 971
2000-01-01 970
2000-04-01 7440
2000-07-01 10093
2000-10-01 7135
2001-01-01 25168
2001-04-01 5611
2001-07-01 8928
2001-10-01 11051
2002-01-01 -6882
2002-04-01 713
2002-07-01 2406
2002-10-01 3325
2003-01-01 3499
2003-04-01 7581
2003-07-01 -2564
2003-10-01 2140
2004-01-01 -8477
2004-04-01 4784
2004-07-01 1097
2004-10-01 1331
2005-01-01 -4459
2005-04-01 3908
2005-07-01 -3191
2005-10-01 7445
2006-01-01 140
2006-04-01 8315
2006-07-01 -1262
2006-10-01 9549
2007-01-01 2097
2007-04-01 11774
2007-07-01 1477
2007-10-01 -3311
2008-01-01 156
2008-04-01 19383
2008-07-01 -331
2008-10-01 180
2009-01-01 17310
2009-04-01 31495
2009-07-01 15516
2009-10-01 8137
2010-01-01 15229
2010-04-01 5466
2010-07-01 4082
2010-10-01 9885
2011-01-01 10771
2011-04-01 4687
2011-07-01 4828
2011-10-01 12639
2012-01-01 12371
2012-04-01 7555
2012-07-01 2554
2012-10-01 7545
2013-01-01 3877
2013-04-01 2921
2013-07-01 4313
2013-10-01 1692
2014-01-01 9187
2014-04-01 18804
2014-07-01 -559
2014-10-01 -1787
2015-01-01 -2998
2015-04-01 -8603
2015-07-01 -3582
2015-10-01 8313
2016-01-01 -5359
2016-04-01 7003
2016-07-01 -1790
2016-10-01 15199
2017-01-01 -6920
2017-04-01 5984
2017-07-01 642
2017-10-01 -961
2018-01-01 -2809
2018-04-01 438