Quarter	Millions of US Dollars
1994-01-01	205
1998-04-01	250
1999-01-01	-10
1999-07-01	-10
2000-01-01	-10
2000-07-01	-10
2001-01-01	-10
2001-07-01	-10
2002-01-01	-10
2002-07-01	-10
2003-01-01	-10
2003-07-01	-20
2004-07-01	-10
2005-01-01	-10
2005-07-01	-10
2006-01-01	-10
2006-10-01	-10
2007-04-01	-10
2007-07-01	-10
2008-01-01	-10
2008-07-01	-10
2009-01-01	-10
2016-07-01	56
2017-04-01	56
2018-01-01	186