Quarter	US dollars
2004-12-31	2
2005-03-31	4
2005-06-30	2
2005-09-30	2
2005-12-31	3
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	2
2007-03-31	6
2007-06-30	4
2007-09-30	6
2007-12-31	70
2008-03-31	66
2008-06-30	60
2008-09-30	135
2008-12-31	46
2009-03-31	64
2009-06-30	102
2009-09-30	75
2009-12-31	53
2010-03-31	64
2010-06-30	58
2010-09-30	60
2010-12-31	58
2011-03-31	42
2011-06-30	37
2011-09-30	33
2011-12-31	34
2012-03-31	34
2012-06-30	50
2012-09-30	52
2012-12-31	45
2013-03-31	43
2013-06-30	42
2013-09-30	60
2013-12-31	66
2014-03-31	70
2014-06-30	84
2014-09-30	360
2014-12-31	390
2015-03-31	318
2015-06-30	337
2015-09-30	58
2015-12-31	0
2016-03-31	6
2016-06-30	0
2016-09-30	8
2016-12-31	4
2017-03-31	18
2017-06-30	34
2017-09-30	55
2017-12-31	46
2018-03-31	53
2018-06-30	33
2018-09-30	8
2018-12-31	14
2019-03-31	16
2019-06-30	25
2019-09-30	63
2019-12-31	85
2020-03-31	93
2020-06-30	133
2020-09-30	143
2020-12-31	126
2021-03-31	131
2021-06-30	129
2021-09-30	127
2021-12-31	125
2022-03-31	54
2022-06-30	49
2022-09-30	53
2022-12-31	47
2023-03-31	47
2023-06-30	48
2023-09-30	52