Quarter	Millions of US Dollars
1991-07-01	0
1991-10-01	0
1992-01-01	0
1992-04-01	0
1992-07-01	0
1992-10-01	50
1993-01-01	50
1993-04-01	50
1993-07-01	80
1993-10-01	103
1994-01-01	45
1994-04-01	40
1994-07-01	34
1994-10-01	34
1995-01-01	38
1995-04-01	0
1995-07-01	0
1995-10-01	0
1996-01-01	0
1996-04-01	0
1996-07-01	540
1996-10-01	940
1997-01-01	1440
1997-04-01	1440
1997-07-01	900
1997-10-01	500
1998-01-01	0
1998-04-01	0
1998-07-01	100
1998-10-01	500
1999-01-01	710
1999-04-01	707
1999-07-01	637
1999-10-01	244
2000-01-01	0
2000-04-01	0
2000-07-01	0
2000-10-01	0
2001-01-01	8
2001-04-01	8
2001-07-01	8
2001-10-01	8
2002-01-01	0
2002-04-01	0
2002-07-01	0
2002-10-01	0
2003-01-01	108
2003-04-01	107
2003-07-01	116
2003-10-01	120
2004-01-01	0
2004-04-01	0
2004-07-01	90
2004-10-01	185
2005-01-01	197
2005-04-01	190
2005-07-01	115
2005-10-01	34
2006-01-01	768
2006-04-01	788
2006-07-01	765
2006-10-01	764
2007-01-01	15
2007-04-01	0
2007-07-01	0
2007-10-01	600
2008-01-01	600
2008-04-01	600
2008-07-01	2100
2008-10-01	1500
2009-01-01	1500
2009-04-01	1500
2009-07-01	10
2009-10-01	10
2010-01-01	48
2010-04-01	73
2010-07-01	439
2010-10-01	450
2011-01-01	399
2011-04-01	385
2011-07-01	0
2011-10-01	0
2012-01-01	0
2012-04-01	0
2012-07-01	1307
2012-10-01	1307
2013-01-01	1307
2013-04-01	1307
2013-07-01	0
2013-10-01	0
2014-01-01	18
2014-04-01	18
2014-07-01	18
2014-10-01	18
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	52
2018-01-01	52
2018-04-01	52