Quarterly Millions of US Dollars
1987-07-01 227
1987-10-01 1610
1988-01-01 1005
1988-04-01 2157
1988-07-01 1941
1988-10-01 5629
1989-01-01 -34
1989-04-01 7042
1989-07-01 260
1989-10-01 -2190
1990-01-01 2832
1990-04-01 547
1990-07-01 3684
1990-10-01 -5029
1991-01-01 1625
1991-04-01 4599
1991-07-01 4666
1991-10-01 -617
1992-01-01 3072
1992-04-01 9780
1992-07-01 -1875
1992-10-01 4208
1993-01-01 3471
1993-04-01 5942
1993-07-01 1913
1993-10-01 -1164
1994-01-01 2882
1994-04-01 -393
1994-07-01 -4562
1994-10-01 10662
1995-01-01 2370
1995-04-01 3086
1995-07-01 -6866
1995-10-01 13126
1996-01-01 931
1996-04-01 9229
1996-07-01 6598
1996-10-01 7425
1997-01-01 4903
1997-04-01 -3314
1997-07-01 -725
1997-10-01 12663
1998-01-01 6582
1998-04-01 3555
1998-07-01 9909
1998-10-01 -3435
1999-01-01 -474
1999-04-01 -5375
1999-07-01 -53
1999-10-01 3707
2000-01-01 5271
2000-04-01 -1104
2000-07-01 -821
2000-10-01 509
2001-01-01 5734
2001-04-01 -1646
2001-07-01 3423
2001-10-01 654
2002-01-01 7363
2002-04-01 1281
2002-07-01 3565
2002-10-01 3631
2003-01-01 4792
2003-04-01 2467
2003-07-01 4315
2003-10-01 5731
2004-01-01 7089
2004-04-01 2763
2004-07-01 3194
2004-10-01 4929
2005-01-01 1185
2005-04-01 3285
2005-07-01 15
2005-10-01 2373
2006-01-01 3584
2006-04-01 2092
2006-07-01 -1156
2006-10-01 2923
2007-01-01 -247
2007-04-01 -830
2007-07-01 -2391
2007-10-01 813
2008-01-01 5402
2008-04-01 4324
2008-07-01 -2055
2008-10-01 1354
2009-01-01 3384
2009-04-01 -7
2009-07-01 -3015
2009-10-01 6405
2010-01-01 7312
2010-04-01 2262
2010-07-01 147
2010-10-01 8446
2011-01-01 3131
2011-04-01 4803
2011-07-01 3560
2011-10-01 7588
2012-01-01 5296
2012-04-01 11437
2012-07-01 6909
2012-10-01 8332
2013-01-01 11350
2013-04-01 3527
2013-07-01 4425
2013-10-01 4983
2014-01-01 5663
2014-04-01 7950
2014-07-01 -1095
2014-10-01 7469
2015-01-01 4317
2015-04-01 1210
2015-07-01 -225
2015-10-01 130
2016-01-01 1853
2016-04-01 4165
2016-07-01 -3816
2016-10-01 -770
2017-01-01 10015
2017-04-01 900
2017-07-01 -256
2017-10-01 1568
2018-01-01 3716