Quarterly Millions of US Dollars
1986-04-01 250
1988-04-01 300
1988-10-01 319
1989-04-01 200
1989-07-01 412
1989-10-01 250
1990-01-01 200
1990-04-01 147
1990-07-01 150
1990-10-01 96
1991-04-01 267
1991-10-01 300
1992-01-01 234
1992-04-01 239
1992-07-01 1052
1992-10-01 981
1993-01-01 1043
1993-04-01 540
1993-07-01 596
1993-10-01 1537
1994-01-01 694
1994-04-01 250
1994-07-01 5118
1994-10-01 5840
1995-04-01 -302
1995-07-01 1548
1995-10-01 227
1996-01-01 435
1996-04-01 1259
1996-07-01 -264
1996-10-01 442
1997-01-01 2197
1997-04-01 3979
1997-07-01 2883
1997-10-01 677
1998-01-01 2711
1998-04-01 5606
1998-07-01 5446
1998-10-01 -2126
1999-01-01 1954
1999-04-01 1418
1999-07-01 288
1999-10-01 2677
2000-01-01 2464
2000-04-01 3778
2000-07-01 22461
2000-10-01 -333
2001-01-01 1100
2001-04-01 76
2001-07-01 72
2001-10-01 526
2002-01-01 1272
2002-04-01 -316
2002-07-01 1192
2002-10-01 -721
2003-01-01 3448
2003-04-01 337
2003-07-01 4076
2003-10-01 357
2004-01-01 3360
2004-04-01 5444
2004-07-01 728
2004-10-01 2129
2005-01-01 7602
2005-04-01 9722
2005-07-01 -3992
2005-10-01 2769
2006-01-01 7338
2006-04-01 -1895
2006-07-01 1498
2006-10-01 5114
2007-01-01 5267
2007-04-01 -1683
2007-07-01 -1631
2007-10-01 2809
2008-01-01 -3030
2008-04-01 10323
2008-07-01 704
2008-10-01 -599
2009-01-01 885
2009-04-01 3911
2009-07-01 4162
2009-10-01 4241
2010-01-01 9099
2010-04-01 5647
2010-07-01 7618
2010-10-01 1337
2011-01-01 9209
2011-04-01 7849
2011-07-01 1892
2011-10-01 549
2012-01-01 10494
2012-04-01 16485
2012-07-01 5327
2012-10-01 12329
2013-01-01 -117
2013-04-01 2112
2013-07-01 8561
2013-10-01 17144
2014-01-01 -9307
2014-04-01 -766
2014-07-01 1109
2014-10-01 812
2015-01-01 -141
2015-04-01 68
2015-07-01 386
2015-10-01 -16980
2016-01-01 1505
2016-04-01 7108
2016-07-01 -2385
2016-10-01 4797
2017-01-01 1580
2017-04-01 6440
2017-07-01 5993
2017-10-01 7329
2018-01-01 5423
2018-04-01 -8606