Quarter	Millions of US Dollars
1996-10-01	1200
2002-01-01	-73
2002-07-01	-36
2003-01-01	-36
2004-01-01	592
2004-07-01	-36
2005-01-01	-36
2005-07-01	2214
2006-01-01	-36
2006-04-01	650
2006-07-01	1514
2009-07-01	1485
2010-01-01	-80
2010-07-01	-80
2010-10-01	-54
2011-01-01	-80
2011-04-01	-650
2011-07-01	-80
2012-01-01	-80
2012-07-01	489
2013-07-01	-160
2014-07-01	-1195
2016-07-01	-750
2017-04-01	500