Quarterly Millions of US Dollars
1976-04-01 24
1985-04-01 28
1985-10-01 33
1986-04-01 36
1986-10-01 61
1987-01-01 130
1987-10-01 112
1988-01-01 376
1988-04-01 380
1988-07-01 50
1988-10-01 399
1989-01-01 79
1989-04-01 216
1989-07-01 502
1989-10-01 350
1990-01-01 200
1990-04-01 213
1990-07-01 150
1990-10-01 96
1991-04-01 267
1991-10-01 300
1992-01-01 285
1992-04-01 215
1992-07-01 1052
1992-10-01 913
1993-01-01 1118
1993-04-01 431
1993-07-01 596
1993-10-01 1590
1994-01-01 490
1994-04-01 -16
1995-01-01 -307
1995-04-01 -302
1995-07-01 1039
1995-10-01 127
1996-01-01 385
1996-04-01 1383
1996-07-01 -565
1996-10-01 -752
1997-01-01 442
1997-04-01 727
1997-07-01 686
1997-10-01 292
1998-01-01 755
1998-04-01 589
1998-07-01 -784
1998-10-01 -1479
1999-01-01 1042
1999-04-01 287
1999-07-01 -3
1999-10-01 2753
2000-01-01 2164
2000-04-01 1941
2000-07-01 1266
2000-10-01 -135
2001-01-01 456
2001-04-01 -612
2001-07-01 -3
2001-10-01 444
2002-01-01 862
2002-04-01 -446
2002-07-01 -75
2002-10-01 326
2003-01-01 317
2003-04-01 1030
2003-07-01 675
2003-10-01 -744
2004-01-01 -46
2004-04-01 750
2004-07-01 211
2004-10-01 993
2005-01-01 1388
2005-04-01 795
2005-07-01 -93
2005-10-01 1159
2006-01-01 2408
2006-04-01 -643
2006-07-01 2584
2006-10-01 866
2007-01-01 3368
2007-04-01 -111
2007-07-01 -550
2007-10-01 1250
2008-01-01 -1298
2008-04-01 500
2008-07-01 1500
2008-10-01 -600
2009-01-01 1000
2009-04-01 250
2009-07-01 392
2010-01-01 1618
2010-04-01 221
2010-07-01 2962
2010-10-01 1652
2011-01-01 2906
2011-04-01 1188
2011-07-01 -282
2011-10-01 1870
2012-01-01 4034
2012-04-01 2910
2012-07-01 2250
2012-10-01 7240
2013-01-01 2583
2013-04-01 7440
2013-07-01 1065
2013-10-01 8464
2014-01-01 1055
2014-04-01 10777
2014-07-01 6582
2014-10-01 5082
2015-01-01 2284
2015-04-01 1363
2015-07-01 -1542
2015-10-01 -970
2016-01-01 2161
2016-04-01 6020
2016-07-01 -2149
2016-10-01 4133
2017-01-01 5412
2017-04-01 10272
2017-07-01 1081
2017-10-01 3606
2018-01-01 3423
2018-04-01 -1544