Quarterly Millions of US Dollars
1987-07-01 307
1987-10-01 1978
1988-01-01 -12
1988-04-01 -84
1988-07-01 -133
1988-10-01 -59
1989-01-01 -791
1989-04-01 683
1989-07-01 363
1989-10-01 1929
1990-01-01 -1604
1990-04-01 2208
1990-07-01 4487
1990-10-01 788
1991-01-01 -377
1991-04-01 -775
1991-07-01 1765
1991-10-01 -169
1992-01-01 1071
1992-04-01 -2212
1992-07-01 1513
1992-10-01 1656
1993-01-01 1354
1993-04-01 3969
1993-07-01 5708
1993-10-01 -1689
1994-01-01 2578
1994-04-01 2503
1994-07-01 -6731
1994-10-01 4914
1995-01-01 2687
1995-04-01 3455
1995-07-01 -7213
1995-10-01 9190
1996-01-01 2277
1996-04-01 10477
1996-07-01 4393
1996-10-01 4671
1997-01-01 3543
1997-04-01 -1500
1997-07-01 -3598
1997-10-01 5633
1998-01-01 7457
1998-04-01 3624
1998-07-01 7275
1998-10-01 -1666
1999-01-01 -648
1999-04-01 -1989
1999-07-01 -2674
1999-10-01 -1761
2000-01-01 4597
2000-04-01 -2289
2000-07-01 -1251
2000-10-01 -4575
2001-01-01 2072
2001-04-01 -2104
2001-07-01 244
2001-10-01 -1670
2002-01-01 2805
2002-04-01 -2687
2002-07-01 -1154
2002-10-01 -50
2003-01-01 901
2003-04-01 1009
2003-07-01 1761
2003-10-01 -540
2004-01-01 2619
2004-04-01 -807
2004-07-01 -680
2004-10-01 -940
2005-01-01 -379
2005-04-01 -1193
2005-07-01 448
2005-10-01 -530
2006-01-01 179
2006-04-01 -2898
2006-07-01 -1314
2006-10-01 1905
2007-01-01 -1219
2007-04-01 -2841
2007-07-01 1445
2007-10-01 -397
2008-01-01 -17
2008-04-01 -747
2008-07-01 357
2008-10-01 2065
2009-01-01 23
2009-04-01 -2494
2009-07-01 -313
2009-10-01 1564
2010-01-01 3997
2010-04-01 -1548
2010-07-01 867
2010-10-01 -102
2011-01-01 2859
2011-04-01 -689
2011-07-01 2950
2011-10-01 1430
2012-01-01 6142
2012-04-01 5001
2012-07-01 5703
2012-10-01 2000
2013-01-01 7353
2013-04-01 1704
2013-07-01 3437
2013-10-01 1631
2014-01-01 4726
2014-04-01 1519
2014-07-01 2418
2014-10-01 -241
2015-01-01 3967
2015-04-01 -486
2015-07-01 -381
2015-10-01 -2012
2016-01-01 1761
2016-04-01 801
2016-07-01 699
2016-10-01 -2362
2017-01-01 6395
2017-04-01 900
2017-07-01 1506
2017-10-01 73
2018-01-01 3058