Quarter	Millions of US Dollars
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	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	38
1989-04-01	35
1989-07-01	36
1989-10-01	35
1990-01-01	0
1990-04-01	0
1990-07-01	31
1990-10-01	32
1991-01-01	31
1991-04-01	31
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	124
1996-01-01	322
1996-04-01	215
1996-07-01	28
1996-10-01	149
1997-01-01	24
1997-04-01	197
1997-07-01	85
1997-10-01	38
1998-01-01	38
1998-04-01	0
1998-07-01	0
1998-10-01	30
1999-01-01	30
1999-04-01	30
1999-07-01	30
2000-04-01	0
2000-07-01	0
2000-10-01	0
2001-01-01	0
2001-04-01	0
2001-07-01	0
2001-10-01	0
2002-01-01	0
2002-04-01	0
2002-07-01	0
2002-10-01	0
2003-01-01	0
2003-04-01	0
2003-07-01	0
2003-10-01	0
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	0
2007-04-01	0
2007-07-01	0
2007-10-01	0
2008-01-01	0
2008-04-01	0
2008-07-01	0
2008-10-01	0
2009-01-01	200
2009-04-01	300
2009-07-01	300
2009-10-01	300
2010-01-01	100
2010-04-01	0
2010-07-01	0
2010-10-01	0
2011-01-01	0
2011-04-01	0
2011-07-01	0
2011-10-01	0
2012-01-01	0
2012-04-01	0
2012-07-01	0
2012-10-01	0
2013-01-01	0
2013-04-01	450
2013-07-01	450
2013-10-01	640
2014-01-01	640
2014-04-01	190
2014-07-01	190
2014-10-01	0
2015-01-01	0
2015-04-01	150
2015-07-01	150
2015-10-01	150
2016-01-01	150
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