Quarter	Millions of US Dollars
1993-10-01	695
1995-07-01	50
1996-10-01	-5
1997-04-01	-5
1997-07-01	100
1997-10-01	-5
1998-04-01	-5
1998-10-01	-5
1999-04-01	-5
1999-10-01	-5
2000-04-01	-5
2000-10-01	-5
2001-04-01	-5
2001-10-01	-5
2002-01-01	81
2002-04-01	-5
2002-07-01	-150
2002-10-01	-5
2003-04-01	-5
2003-10-01	-612
2004-01-01	-35
2004-04-01	-5
2004-10-01	140
2005-04-01	-5
2005-07-01	-46
2005-10-01	-5
2010-10-01	750
2013-10-01	1250
2014-04-01	1000
2015-04-01	1500
2015-10-01	-250
2016-10-01	1000
2017-04-01	1000
2017-10-01	1000