Quarterly Millions of US Dollars
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 71
1993-10-01 68
1994-01-01 58
1994-04-01 59
1994-07-01 47
1994-10-01 52
1995-01-01 56
1995-04-01 19
1995-07-01 24
1995-10-01 22
1996-01-01 15
1996-04-01 0
1996-07-01 0
1996-10-01 113
1997-01-01 151
1997-04-01 134
1997-07-01 222
1997-10-01 203
1998-01-01 207
1998-04-01 207
1998-07-01 0
1998-10-01 0
1999-01-01 0
1999-04-01 30
1999-07-01 152
1999-10-01 166
2000-01-01 274
2000-04-01 276
2000-07-01 146
2000-10-01 166
2001-01-01 69
2001-04-01 293
2001-07-01 265
2001-10-01 225
2002-01-01 225
2002-04-01 600
2002-07-01 1133
2002-10-01 1162
2003-01-01 1159
2003-04-01 565
2003-07-01 25
2003-10-01 99
2004-01-01 143
2004-04-01 262
2004-07-01 264
2004-10-01 268
2005-01-01 397
2005-04-01 275
2005-07-01 275
2005-10-01 150
2006-01-01 0
2006-04-01 0
2006-07-01 0
2006-10-01 0
2007-01-01 0
2007-04-01 405
2007-07-01 405
2007-10-01 641
2008-01-01 815
2008-04-01 410
2008-07-01 410
2008-10-01 173
2009-01-01 181
2009-04-01 181
2009-07-01 462
2009-10-01 462
2010-01-01 282
2010-04-01 283
2010-07-01 500
2010-10-01 500
2011-01-01 500
2011-04-01 674
2011-07-01 174
2011-10-01 349
2012-01-01 349
2012-04-01 925
2012-07-01 925
2012-10-01 804
2013-01-01 802
2013-04-01 2054
2013-07-01 2083
2013-10-01 2499
2014-01-01 2503
2014-04-01 457
2014-07-01 456
2014-10-01 4
2015-01-01 125
2015-04-01 498
2015-07-01 498
2015-10-01 778
2016-01-01 653
2016-04-01 280
2016-07-01 391
2016-10-01 250
2017-01-01 1575
2017-04-01 1575
2017-07-01 1464
2017-10-01 1725
2018-01-01 1525
2018-04-01 2145