Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	0
2005-09-30	2
2005-12-31	2
2006-03-31	2
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	2
2008-06-30	6
2008-09-30	7
2008-12-31	10
2009-03-31	11
2009-06-30	8
2009-09-30	13
2009-12-31	8
2010-03-31	8
2010-06-30	4
2010-09-30	11
2010-12-31	57
2011-03-31	57
2011-06-30	65
2011-09-30	70
2011-12-31	68
2012-03-31	67
2012-06-30	61
2012-09-30	66
2012-12-31	76
2013-03-31	126
2013-06-30	126
2013-09-30	102
2013-12-31	78
2014-03-31	80
2014-06-30	82
2014-09-30	75
2014-12-31	64
2015-03-31	65
2015-06-30	25
2015-09-30	68
2015-12-31	62
2016-03-31	62
2016-06-30	62
2016-09-30	64
2016-12-31	58
2017-03-31	48
2017-06-30	47
2017-09-30	38
2017-12-31	32
2018-03-31	53
2018-06-30	55
2018-09-30	55
2018-12-31	49
2019-03-31	48
2019-06-30	92
2019-09-30	78
2019-12-31	71
2020-03-31	72
2020-06-30	73
2020-09-30	23
2020-12-31	10
2021-03-31	10
2021-06-30	8
2021-09-30	1
2021-12-31	1
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0