Quarterly Millions of US Dollars
1977-04-01 50
1980-04-01 30
1982-04-01 -50
1982-07-01 19
1982-10-01 24
1983-01-01 21
1983-10-01 30
1984-01-01 121
1984-04-01 124
1984-07-01 41
1984-10-01 41
1985-01-01 38
1985-04-01 58
1985-07-01 129
1985-10-01 41
1986-01-01 82
1986-04-01 166
1986-07-01 165
1986-10-01 30
1987-01-01 98
1987-04-01 174
1987-07-01 346
1987-10-01 2
1988-01-01 469
1988-04-01 655
1988-07-01 100
1988-10-01 670
1989-07-01 13
1989-10-01 -100
1990-07-01 -4
1990-10-01 -760
1991-01-01 -741
1991-04-01 66
1991-07-01 -40
1991-10-01 157
1992-04-01 80
1992-07-01 -267
1992-10-01 -36
1993-01-01 512
1993-04-01 -335
1993-07-01 956
1993-10-01 959
1994-01-01 716
1994-04-01 -102
1994-07-01 1501
1994-10-01 430
1995-01-01 848
1995-04-01 1228
1995-07-01 39
1995-10-01 1026
1996-01-01 333
1996-04-01 1601
1996-07-01 -292
1996-10-01 406
1997-01-01 667
1997-04-01 981
1997-07-01 1058
1997-10-01 737
1998-01-01 1017
1998-04-01 385
1998-07-01 -4
1998-10-01 -122
1999-01-01 -438
1999-04-01 3005
1999-07-01 1112
1999-10-01 3514
2000-01-01 1782
2000-04-01 1551
2000-07-01 3025
2000-10-01 1617
2001-01-01 4118
2001-04-01 4475
2001-07-01 2817
2001-10-01 3970
2002-01-01 2314
2002-04-01 4202
2002-07-01 -113
2002-10-01 2189
2003-01-01 3346
2003-04-01 5670
2003-07-01 2576
2003-10-01 6410
2004-01-01 2209
2004-04-01 4003
2004-07-01 319
2004-10-01 3692
2005-01-01 3187
2005-04-01 1649
2005-07-01 -1774
2005-10-01 14985
2006-01-01 5011
2006-04-01 2657
2006-07-01 8529
2006-10-01 11519
2007-01-01 1121
2007-04-01 16102
2007-07-01 1258
2007-10-01 4812
2008-01-01 7003
2008-04-01 10552
2008-07-01 398
2008-10-01 2475
2009-01-01 17344
2009-04-01 14478
2009-07-01 11225
2009-10-01 1397
2010-01-01 10374
2010-04-01 -12260
2010-07-01 -1930
2010-10-01 -3513
2011-01-01 -2455
2011-04-01 -12223
2011-07-01 -4100
2011-10-01 1362
2012-01-01 -11649
2012-04-01 -7233
2012-07-01 -11082
2012-10-01 4270
2013-01-01 -2955
2013-04-01 -6166
2013-07-01 -1829
2013-10-01 -1603
2014-01-01 -4236
2014-04-01 -12934
2014-07-01 1223
2014-10-01 -8719
2015-01-01 -4533
2015-04-01 -818
2015-07-01 -2256
2015-10-01 -2757
2016-01-01 -678
2016-04-01 -2225
2016-07-01 681
2016-10-01 -7889
2017-01-01 -3732
2017-04-01 1405
2017-07-01 -2561
2017-10-01 -4689
2018-01-01 973
2018-04-01 747