Quarterly Millions of US Dollars
1971-01-01 86
1971-04-01 51
1971-07-01 24
1971-10-01 81
1972-01-01 253
1972-04-01 154
1972-07-01 219
1972-10-01 416
1973-01-01 161
1973-04-01 392
1973-07-01 130
1973-10-01 544
1974-01-01 130
1974-04-01 493
1974-07-01 67
1974-10-01 166
1975-01-01 355
1975-04-01 553
1975-07-01 187
1975-10-01 209
1976-01-01 204
1976-04-01 478
1976-07-01 626
1976-10-01 598
1977-01-01 694
1977-04-01 864
1977-07-01 1256
1977-10-01 1338
1978-01-01 1744
1978-04-01 1386
1978-07-01 864
1978-10-01 1150
1979-01-01 1020
1979-04-01 666
1979-07-01 850
1979-10-01 253
1980-01-01 -89
1980-04-01 648
1980-07-01 576
1980-10-01 219
1981-01-01 158
1981-04-01 646
1981-07-01 580
1981-10-01 963
1982-01-01 1037
1982-04-01 268
1982-07-01 -71
1982-10-01 467
1983-01-01 -305
1983-04-01 51
1983-07-01 1236
1983-10-01 -101
1984-01-01 320
1984-04-01 52
1984-07-01 203
1984-10-01 1352
1985-01-01 856
1985-04-01 2074
1985-07-01 639
1985-10-01 -164
1986-01-01 1047
1986-04-01 361
1986-07-01 170
1986-10-01 -523
1987-01-01 -28
1987-04-01 -292
1987-07-01 -145
1987-10-01 -202
1988-01-01 356
1988-04-01 -609
1988-07-01 525
1988-10-01 826
1989-01-01 447
1989-04-01 -145
1989-07-01 1865
1989-10-01 717
1990-01-01 36046
1990-04-01 512
1990-07-01 1187
1990-10-01 16714
1991-01-01 2129
1991-04-01 3975
1991-07-01 1191
1991-10-01 4725
1992-01-01 5060
1992-04-01 2637
1992-07-01 3676
1992-10-01 6148
1993-01-01 3368
1993-04-01 23928
1993-07-01 11946
1993-10-01 24146
1994-01-01 13052
1994-04-01 46617
1994-07-01 12767
1994-10-01 11343
1995-01-01 413
1995-04-01 5122
1995-07-01 14657
1995-10-01 9297
1996-01-01 12800
1996-04-01 16932
1996-07-01 19370
1996-10-01 24555
1997-01-01 24066
1997-04-01 28927
1997-07-01 24304
1997-10-01 1629
1998-01-01 13206
1998-04-01 23611
1998-07-01 3576
1998-10-01 -25758
1999-01-01 1558
1999-04-01 16509
1999-07-01 192
1999-10-01 10654
2000-01-01 20442
2000-04-01 3755
2000-07-01 35199
2000-10-01 -5205
2001-01-01 9520
2001-04-01 -2043
2001-07-01 -1891
2001-10-01 -677
2002-01-01 5770
2002-04-01 2790
2002-07-01 2520
2002-10-01 3278
2003-01-01 2249
2003-04-01 4702
2003-07-01 8009
2003-10-01 7145
2004-01-01 16700
2004-04-01 8642
2004-07-01 6597
2004-10-01 15784
2005-01-01 21608
2005-04-01 -8898
2005-07-01 7674
2005-10-01 20527
2006-01-01 32528
2006-04-01 -8122
2006-07-01 21265
2006-10-01 36983
2007-01-01 24517
2007-04-01 41019
2007-07-01 5975
2007-10-01 16651
2008-01-01 -1946
2008-04-01 23963
2008-07-01 3629
2008-10-01 -27779
2009-01-01 5102
2009-04-01 20865
2009-07-01 36266
2009-10-01 40479
2010-01-01 23796
2010-04-01 29215
2010-07-01 37519
2010-10-01 36956
2011-01-01 47224
2011-04-01 36731
2011-07-01 17697
2011-10-01 36542
2012-01-01 44406
2012-04-01 45588
2012-07-01 62646
2012-10-01 69752
2013-01-01 36066
2013-04-01 50116
2013-07-01 52054
2013-10-01 72932
2014-01-01 20993
2014-04-01 58075
2014-07-01 39779
2014-10-01 70932
2015-01-01 34141
2015-04-01 49997
2015-07-01 13134
2015-10-01 -3013
2016-01-01 34151
2016-04-01 77290
2016-07-01 30126
2016-10-01 87494
2017-01-01 69078
2017-04-01 65545
2017-07-01 69263
2017-10-01 87599
2018-01-01 73162
2018-04-01 47323