Quarterly Millions of US Dollars
1987-04-01 25
1987-07-01 -3
1987-10-01 74
1988-01-01 11
1988-04-01 19
1988-07-01 54
1988-10-01 34
1989-01-01 10
1989-04-01 85
1989-07-01 68
1989-10-01 38
1990-01-01 88
1990-04-01 69
1990-07-01 96
1990-10-01 -18
1991-01-01 -13
1991-04-01 43
1991-07-01 113
1991-10-01 22
1992-01-01 110
1992-04-01 24
1992-07-01 110
1992-10-01 -21
1993-01-01 72
1993-04-01 22
1993-07-01 144
1993-10-01 -17
1994-01-01 48
1994-04-01 50
1994-07-01 99
1994-10-01 -43
1995-01-01 -71
1995-04-01 6
1995-07-01 210
1995-10-01 -32
1996-01-01 77
1996-04-01 -1
1996-07-01 49
1996-10-01 -37
1997-01-01 110
1997-04-01 114
1997-07-01 106
1997-10-01 -194
1998-01-01 95
1998-04-01 63
1998-07-01 99
1998-10-01 -153
1999-01-01 -98
1999-04-01 11
1999-07-01 21
1999-10-01 -80
2000-01-01 -21
2000-04-01 -87
2000-07-01 -34
2000-10-01 -46
2001-01-01 28
2001-04-01 32
2001-07-01 49
2001-10-01 33
2002-01-01 66
2002-04-01 -142
2002-07-01 88
2002-10-01 -23
2003-01-01 68
2003-04-01 50
2003-07-01 244
2003-10-01 -111
2004-01-01 163
2004-04-01 -64
2004-07-01 92
2004-10-01 -135
2005-01-01 -81
2005-04-01 -106
2005-07-01 99
2005-10-01 105
2006-01-01 -258
2006-04-01 3
2006-07-01 250
2006-10-01 -26
2007-01-01 -128
2007-04-01 130
2007-07-01 63
2007-10-01 11
2008-01-01 21
2008-04-01 558
2008-07-01 334
2008-10-01 888
2009-01-01 310
2009-04-01 41
2009-07-01 445
2009-10-01 456
2010-01-01 -114
2010-04-01 2050
2010-07-01 534
2010-10-01 -90
2011-01-01 439
2011-04-01 11
2011-07-01 -90
2011-10-01 421
2012-01-01 93
2012-04-01 131
2012-07-01 -10
2012-10-01 67
2013-01-01 296
2013-04-01 -367
2013-07-01 187
2013-10-01 -66
2014-01-01 -125
2014-04-01 -33
2014-07-01 157
2014-10-01 286
2015-01-01 76
2015-04-01 -155
2015-07-01 373
2015-10-01 -125
2016-01-01 68
2016-04-01 -273
2016-07-01 317
2016-10-01 -353
2017-01-01 -304
2017-04-01 25
2017-07-01 -191
2017-10-01 -316
2018-01-01 -309