Quarter	Millions of US Dollars
1976-04-01	0
1976-07-01	0
1976-10-01	0
1977-01-01	0
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	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	0
1984-04-01	0
1984-07-01	0
1984-10-01	22
1985-01-01	22
1985-04-01	22
1985-07-01	31
1985-10-01	43
1986-01-01	70
1986-04-01	69
1986-07-01	75
1986-10-01	40
1987-01-01	40
1987-04-01	39
1987-07-01	64
1987-10-01	69
1988-01-01	43
1988-04-01	42
1988-07-01	8
1988-10-01	5
1989-01-01	28
1989-04-01	27
1989-07-01	24
1989-10-01	25
1996-07-01	0
1996-10-01	0
1997-01-01	0
1997-04-01	0
1997-07-01	0
1997-10-01	0
1998-01-01	0
1998-04-01	0
1998-07-01	0
1998-10-01	0
1999-01-01	0
1999-04-01	0
1999-07-01	0
1999-10-01	0
2000-01-01	0
2000-04-01	0
2000-07-01	0
2000-10-01	100
2001-01-01	100
2001-04-01	100
2001-07-01	309
2001-10-01	202
2002-01-01	199
2002-04-01	228
2002-07-01	0
2002-10-01	0
2003-01-01	0
2003-04-01	158
2003-07-01	162
2003-10-01	175
2004-01-01	170
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	567
2007-10-01	589
2008-01-01	632
2008-04-01	631
2008-07-01	0
2008-10-01	0
2009-01-01	0
2009-04-01	0
2009-07-01	0
2009-10-01	0
2010-01-01	0
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	0
2013-07-01	0
2013-10-01	0
2014-01-01	0
2014-04-01	0
2014-07-01	0
2014-10-01	0
2015-01-01	64
2015-04-01	65
2015-07-01	65
2015-10-01	64
2016-01-01	0
2016-04-01	555
2016-07-01	558
2016-10-01	527
2017-01-01	535
2017-04-01	0
2017-07-01	0
2017-10-01	600
2018-01-01	600
2018-04-01	600