Quarterly Millions of US Dollars
1980-07-01 25
1982-01-01 43
1982-04-01 20
1983-04-01 40
1983-07-01 20
1984-10-01 83
1985-01-01 116
1985-04-01 129
1985-07-01 294
1985-10-01 206
1986-01-01 353
1986-04-01 389
1986-07-01 329
1986-10-01 156
1987-01-01 192
1987-04-01 200
1987-07-01 216
1987-10-01 364
1988-01-01 230
1988-04-01 158
1988-07-01 239
1988-10-01 194
1989-04-01 154
1990-07-01 -39
1991-07-01 143
1991-10-01 22
1992-01-01 -155
1992-04-01 48
1992-07-01 219
1992-10-01 -4
1993-01-01 -290
1993-04-01 336
1993-07-01 1341
1993-10-01 334
1994-01-01 1407
1994-04-01 422
1994-07-01 1219
1994-10-01 458
1995-01-01 -142
1995-04-01 -237
1995-07-01 759
1995-10-01 -105
1996-01-01 -93
1996-04-01 -71
1996-07-01 1357
1996-10-01 308
1997-01-01 668
1997-04-01 1458
1997-07-01 2
1997-10-01 414
1998-01-01 10
1998-04-01 -770
1998-07-01 -861
1998-10-01 611
1999-01-01 -450
1999-04-01 227
1999-07-01 -426
1999-10-01 -82
2000-01-01 -289
2000-04-01 29
2000-07-01 -247
2001-01-01 -150
2001-04-01 1359
2001-07-01 -1407
2001-10-01 151
2002-01-01 860
2002-04-01 -1135
2002-07-01 -404
2002-10-01 -939
2003-01-01 -300
2003-07-01 -133
2003-10-01 965
2004-01-01 -850
2004-04-01 -500
2004-07-01 530
2004-10-01 2822
2005-01-01 -96
2005-04-01 -200
2005-07-01 1230
2005-10-01 1000
2006-01-01 -257
2006-04-01 -779
2006-07-01 -509
2006-10-01 -150
2007-01-01 776
2007-04-01 2047
2007-07-01 1134
2007-10-01 262
2008-01-01 575
2008-04-01 4
2008-07-01 2306
2008-10-01 -1526
2009-04-01 -483
2009-07-01 878
2009-10-01 881
2010-01-01 58
2010-04-01 -386
2010-07-01 -1125
2010-10-01 2034
2011-01-01 525
2011-04-01 1748
2011-07-01 504
2011-10-01 640
2012-01-01 1056
2012-04-01 7815
2012-07-01 2249
2012-10-01 2169
2013-01-01 2006
2013-04-01 2060
2013-07-01 1522
2013-10-01 4311
2014-01-01 1907
2014-04-01 3315
2014-07-01 2329
2014-10-01 27842
2015-01-01 -423
2015-04-01 2563
2015-07-01 6715
2015-10-01 8562
2016-01-01 4338
2016-04-01 16418
2016-07-01 12749
2016-10-01 8732
2017-01-01 11891
2017-04-01 1450
2017-07-01 11230
2017-10-01 24545
2018-01-01 9602
2018-04-01 1628