Quarterly Millions of US Dollars
1977-04-01 0
1977-07-01 0
1977-10-01 0
1978-01-01 0
1978-04-01 0
1978-07-01 0
1978-10-01 0
1979-01-01 0
1979-04-01 0
1979-07-01 0
1979-10-01 0
1980-01-01 0
1980-04-01 0
1980-07-01 0
1980-10-01 0
1981-01-01 0
1981-04-01 10
1981-07-01 10
1981-10-01 11
1982-01-01 10
1982-04-01 0
1982-07-01 0
1982-10-01 0
1983-01-01 0
1983-04-01 0
1983-07-01 0
1983-10-01 0
1984-01-01 0
1984-04-01 0
1984-07-01 0
1984-10-01 0
1985-01-01 0
1985-04-01 0
1985-07-01 0
1985-10-01 0
1986-01-01 0
1986-04-01 0
1986-07-01 0
1986-10-01 0
1987-01-01 0
1987-04-01 62
1987-07-01 62
1987-10-01 62
1988-01-01 62
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 5
1993-10-01 15
1994-01-01 25
1994-04-01 35
1994-07-01 44
1994-10-01 54
1995-01-01 42
1995-04-01 55
1995-07-01 65
1995-10-01 35
1996-01-01 58
1996-04-01 87
1996-07-01 129
1996-10-01 263
1997-01-01 250
1997-04-01 245
1997-07-01 266
1997-10-01 462
1998-01-01 464
1998-04-01 389
1998-07-01 345
1998-10-01 22
1999-01-01 23
1999-04-01 23
1999-07-01 23
1999-10-01 23
2000-01-01 472
2000-04-01 3615
2000-07-01 3615
2000-10-01 3615
2001-01-01 3143
2001-04-01 147
2001-07-01 147
2001-10-01 150
2002-01-01 150
2002-04-01 5
2002-07-01 5
2002-10-01 2
2003-01-01 2
2003-04-01 0
2003-07-01 0
2003-10-01 2
2004-01-01 2
2004-04-01 2
2004-07-01 2
2004-10-01 0
2005-01-01 0
2005-04-01 740
2005-07-01 740
2005-10-01 740
2006-01-01 740
2006-04-01 0
2006-07-01 0
2006-10-01 0
2007-01-01 0
2007-04-01 0
2007-07-01 0
2007-10-01 0
2008-01-01 32
2008-04-01 2940
2008-07-01 3071
2008-10-01 3071
2009-01-01 3170
2009-04-01 333
2009-07-01 333
2009-10-01 333
2010-01-01 202
2010-04-01 131
2010-07-01 650
2010-10-01 650
2011-01-01 832
2011-04-01 832
2011-07-01 182
2011-10-01 250
2012-01-01 68
2012-04-01 68
2012-07-01 649
2012-10-01 581
2013-01-01 775
2013-04-01 775
2013-07-01 194
2013-10-01 576
2014-01-01 387
2014-04-01 397
2014-07-01 397
2014-10-01 664
2015-01-01 660
2015-04-01 650
2015-07-01 650
2015-10-01 0
2016-01-01 0
2016-04-01 0
2016-07-01 0
2016-10-01 0
2017-01-01 0
2017-04-01 0
2017-07-01 0
2017-10-01 0
2018-01-01 0
2018-04-01 0