Quarterly Millions of US Dollars
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 0
1981-07-01 0
1981-10-01 0
1982-01-01 0
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 20
1984-04-01 70
1984-07-01 70
1984-10-01 106
1985-01-01 87
1985-04-01 37
1985-07-01 39
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 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 12
1990-01-01 13
1990-04-01 13
1990-07-01 14
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 0
1994-07-01 0
1994-10-01 0
1995-01-01 0
1995-04-01 0
1995-07-01 0
1995-10-01 67
1996-01-01 117
1996-04-01 117
1996-07-01 117
1996-10-01 50
1997-01-01 0
1997-04-01 0
1997-07-01 12
1997-10-01 87
1998-01-01 75
1998-04-01 67
1998-07-01 67
1998-10-01 0
1999-01-01 0
1999-04-01 2
1999-07-01 2
1999-10-01 13
2000-01-01 13
2000-04-01 28
2000-07-01 28
2000-10-01 28
2001-01-01 28
2001-04-01 21
2001-07-01 21
2001-10-01 21
2002-01-01 21
2002-04-01 366
2002-07-01 366
2002-10-01 356
2003-01-01 570
2003-04-01 214
2003-07-01 214
2003-10-01 214
2004-01-01 0
2004-04-01 0
2004-07-01 0
2004-10-01 0
2005-01-01 0
2005-04-01 0
2005-07-01 0
2005-10-01 0
2006-01-01 0
2006-04-01 0
2006-07-01 0
2006-10-01 0
2007-01-01 200
2007-04-01 200
2007-07-01 200
2007-10-01 200
2008-01-01 0
2008-04-01 300
2008-07-01 300
2008-10-01 300
2009-01-01 300
2009-04-01 0
2009-07-01 0
2009-10-01 0
2010-01-01 250
2010-04-01 250
2010-07-01 250
2010-10-01 250
2011-01-01 250
2011-04-01 250
2011-07-01 250
2011-10-01 250
2012-01-01 250
2012-04-01 250
2012-07-01 250
2012-10-01 290
2013-01-01 350
2013-04-01 350
2013-07-01 350
2013-10-01 310
2014-01-01 0
2014-04-01 0
2014-07-01 0
2014-10-01 0
2015-01-01 0
2015-04-01 0
2015-07-01 0
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
2017-07-01 500
2017-10-01 1000
2018-01-01 1000
2018-04-01 1000