Quarterly Millions of US Dollars
1987-04-01 0
1987-07-01 0
1987-10-01 0
1988-01-01 0
1988-04-01 0
1988-07-01 0
1988-10-01 0
1989-01-01 0
1989-04-01 0
1989-07-01 0
1989-10-01 0
1990-01-01 0
1990-04-01 0
1990-07-01 0
1990-10-01 0
1991-01-01 0
1991-04-01 0
1991-07-01 0
1991-10-01 0
1992-01-01 0
1992-04-01 0
1992-07-01 0
1992-10-01 0
1993-01-01 0
1993-04-01 0
1993-07-01 0
1993-10-01 0
1994-01-01 0
1994-04-01 9
1994-07-01 13
1994-10-01 5
1995-01-01 4
1995-04-01 -1
1995-07-01 12
1995-10-01 6
1996-01-01 0
1996-04-01 17
1996-07-01 6
1996-10-01 5
1997-01-01 13
1997-04-01 13
1997-07-01 1
1997-10-01 17
1998-01-01 10
1998-04-01 14
1998-07-01 51
1998-10-01 55
1999-01-01 8
1999-04-01 23
1999-07-01 16
1999-10-01 57
2000-01-01 -12
2000-04-01 -4
2000-07-01 -11
2000-10-01 -6
2001-01-01 1
2001-04-01 19
2001-07-01 -1
2001-10-01 64
2002-01-01 16
2002-04-01 -2
2002-07-01 49
2002-10-01 88
2003-01-01 0
2003-04-01 45
2003-07-01 51
2003-10-01 252
2004-01-01 -39
2004-04-01 52
2004-07-01 138
2004-10-01 489
2005-01-01 10
2005-04-01 624
2005-07-01 74
2005-10-01 664
2006-01-01 45
2006-04-01 716
2006-07-01 -58
2006-10-01 641
2007-01-01 -388
2007-04-01 892
2007-07-01 605
2007-10-01 388
2008-01-01 -683
2008-04-01 97
2008-07-01 181
2008-10-01 -244
2009-01-01 111
2009-04-01 -499
2009-07-01 -321
2009-10-01 -311
2010-01-01 -550
2010-04-01 40
2010-07-01 0
2010-10-01 35
2011-01-01 86
2011-04-01 -29
2011-07-01 -93
2011-10-01 31
2012-01-01 -57
2012-04-01 -45
2012-07-01 -29
2012-10-01 47
2013-01-01 108
2013-04-01 176
2013-07-01 -232
2013-10-01 230
2014-01-01 -79
2014-04-01 0
2014-07-01 253
2014-10-01 255
2015-01-01 8
2015-04-01 212
2015-07-01 -15
2015-10-01 86
2016-01-01 26
2016-04-01 90
2016-07-01 42
2016-10-01 134
2017-01-01 38
2017-04-01 111
2017-07-01 -89
2017-10-01 48
2018-01-01 134