Quarter	US dollars
1999-03-31	23
1999-06-30	14
1999-09-30	65
1999-12-31	7
2000-03-31	12
2000-06-30	11
2000-09-30	11
2000-12-31	13
2001-03-31	10
2001-06-30	10
2001-09-30	10
2001-12-31	10
2002-03-31	13
2002-06-30	7
2002-09-30	8
2002-12-31	6
2003-03-31	6
2003-06-30	6
2003-09-30	53
2003-12-31	5
2004-03-31	13
2004-06-30	14
2004-09-30	11
2004-12-31	4
2005-03-31	6
2005-06-30	3
2005-09-30	3
2005-12-31	9
2006-03-31	3
2006-06-30	60
2006-09-30	8
2006-12-31	6
2007-03-31	5
2007-06-30	0
2007-09-30	3
2007-12-31	4
2008-03-31	1
2008-06-30	0
2008-09-30	3
2008-12-31	0
2009-03-31	0
2009-06-30	1
2009-09-30	29
2009-12-31	27
2010-03-31	1
2010-06-30	10
2010-09-30	10
2010-12-31	11
2011-03-31	12
2011-06-30	124
2011-09-30	13
2011-12-31	3
2012-03-31	4
2012-06-30	6
2012-09-30	2
2012-12-31	1
2013-03-31	4
2013-06-30	4
2013-09-30	4
2013-12-31	2
2014-03-31	1
2014-06-30	5
2014-09-30	5
2014-12-31	5
2015-03-31	3
2015-06-30	1