Quarter	Millions of US Dollars
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	65
1998-10-01	65
1999-01-01	72
1999-04-01	72
1999-07-01	10
1999-10-01	10
2000-01-01	0
2000-04-01	0
2000-07-01	162
2000-10-01	83
2001-01-01	79
2001-04-01	76
2001-07-01	0
2001-10-01	0
2002-01-01	0
2002-04-01	0
2002-07-01	0
2002-10-01	0
2003-01-01	0
2003-04-01	0
2003-07-01	0
2003-10-01	253
2004-01-01	244
2004-04-01	243
2004-07-01	248
2004-10-01	0
2005-01-01	0
2005-04-01	0
2005-07-01	0
2005-10-01	200
2006-01-01	200
2006-04-01	454
2006-07-01	453
2006-10-01	263
2007-01-01	266
2007-04-01	0
2007-07-01	0
2007-10-01	0
2008-01-01	0
2008-04-01	0
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	290
2013-07-01	299
2013-10-01	306
2014-01-01	306
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	0
2016-07-01	0
2016-10-01	0
2017-01-01	0
2017-04-01	0
2017-07-01	0
2017-10-01	378
2018-01-01	388
2018-04-01	367