Quarter	Millions of US Dollars
1993-07-01	0
1993-10-01	0
1994-01-01	0
1994-04-01	0
1994-07-01	0
1994-10-01	0
1995-01-01	0
1995-04-01	0
1995-07-01	0
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	0
2000-01-01	0
2000-04-01	0
2000-07-01	0
2000-10-01	0
2001-01-01	0
2001-04-01	0
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	0
2004-01-01	0
2004-04-01	0
2004-07-01	0
2004-10-01	0
2005-01-01	0
2005-04-01	0
2005-07-01	0
2005-10-01	0
2006-01-01	0
2006-04-01	0
2006-07-01	0
2006-10-01	0
2007-01-01	0
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	500
2010-04-01	1142
2010-07-01	1153
2010-10-01	1158
2011-01-01	661
2011-04-01	1250
2011-07-01	1250
2011-10-01	4250
2012-01-01	4550
2012-04-01	3300
2012-07-01	4800
2012-10-01	2792
2013-01-01	2463
2013-04-01	2483
2013-07-01	3584
2013-10-01	2569
2014-01-01	2569
2014-04-01	3231
2014-07-01	1277
2014-10-01	1282
2015-01-01	1282
2015-04-01	1436
2015-07-01	1106
2015-10-01	3089
2016-01-01	4234
2016-04-01	3122
2016-07-01	3127
2016-10-01	2566
2017-01-01	3537
2017-04-01	4550
2017-07-01	5095
2017-10-01	3669
2018-01-01	2532
2018-04-01	4741