Quarter	Millions of US Dollars
1995-10-01	0
1996-01-01	0
1996-04-01	0
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	150
2000-01-01	150
2000-04-01	150
2000-07-01	150
2005-10-01	0
2006-01-01	0
2006-04-01	0
2006-07-01	0
2006-10-01	17
2007-01-01	17
2007-04-01	56
2007-07-01	57
2007-10-01	42
2008-01-01	95
2008-04-01	51
2008-07-01	51
2008-10-01	51
2009-01-01	135
2009-04-01	175
2009-07-01	207
2009-10-01	205
2010-01-01	136
2010-04-01	114
2010-07-01	96
2010-10-01	110
2011-01-01	34
2011-04-01	46
2011-07-01	46
2011-10-01	141
2012-01-01	144
2012-04-01	107
2012-07-01	110
2012-10-01	0
2013-01-01	60
2013-04-01	60
2013-07-01	60
2013-10-01	60
2014-01-01	0
2014-04-01	0
2014-07-01	0
2014-10-01	0
2015-01-01	0
2015-04-01	0
2015-07-01	0
2015-10-01	0
2016-01-01	0
2016-04-01	94
2016-07-01	98
2016-10-01	93
2017-01-01	95
2017-04-01	5
2017-07-01	0
2017-10-01	0
2018-01-01	0
2018-04-01	0