Quarter	Millions of US Dollars
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	60
1997-01-01	60
1997-04-01	90
1997-07-01	105
1997-10-01	69
1998-01-01	68
1998-04-01	218
1998-07-01	175
1998-10-01	150
1999-01-01	210
1999-04-01	60
1999-07-01	60
1999-10-01	60
2000-01-01	0
2000-04-01	0
2000-07-01	0
2000-10-01	0
2001-01-01	110
2001-04-01	110
2001-07-01	110
2001-10-01	110
2002-01-01	0
2002-04-01	0
2002-07-01	0
2002-10-01	200
2003-01-01	200
2003-04-01	400
2003-07-01	470
2003-10-01	270
2004-01-01	270
2004-04-01	70
2004-07-01	0
2004-10-01	0
2005-01-01	0
2005-04-01	0
2005-07-01	85
2005-10-01	85
2006-01-01	85
2006-04-01	89
2006-07-01	4
2006-10-01	4
2007-01-01	0
2007-04-01	50
2007-07-01	319
2007-10-01	319
2008-01-01	319
2008-04-01	269
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	6
2010-07-01	181
2010-10-01	181
2011-01-01	741
2011-04-01	735
2011-07-01	560
2011-10-01	1323
2012-01-01	1338
2012-04-01	1392
2012-07-01	1999
2012-10-01	1512
2013-01-01	1369
2013-04-01	4250
2013-07-01	3885
2013-10-01	4353
2014-01-01	4197
2014-04-01	1536
2014-07-01	1378
2014-10-01	1184
2015-01-01	1648
2015-04-01	2570
2015-07-01	2565
2015-10-01	4365
2016-01-01	4344
2016-04-01	5718
2016-07-01	6269
2016-10-01	2867
2017-01-01	2817
2017-04-01	2632
2017-07-01	2383
2017-10-01	3378
2018-01-01	6813
2018-04-01	7769