Quarter	US dollars
2004-12-31	6
2005-03-31	4
2005-06-30	2
2005-09-30	0
2005-12-31	17
2006-03-31	42
2006-06-30	61
2006-09-30	21
2006-12-31	18
2007-03-31	27
2007-06-30	20
2007-09-30	24
2007-12-31	32
2008-03-31	4
2008-06-30	0
2008-09-30	0
2008-12-31	4
2009-03-31	3
2009-06-30	7
2009-09-30	6
2009-12-31	10
2010-03-31	2
2010-06-30	45
2010-09-30	3
2010-12-31	83
2011-03-31	2
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	0
2012-09-30	0
2012-12-31	2
2013-03-31	111
2013-06-30	106
2013-09-30	45
2013-12-31	36
2014-03-31	25
2014-06-30	22
2014-09-30	21
2014-12-31	16
2015-03-31	15
2015-06-30	5
2015-09-30	109
2015-12-31	101
2016-03-31	162
2016-06-30	149
2016-09-30	114
2016-12-31	102
2017-03-31	101
2017-06-30	92
2017-09-30	87
2017-12-31	80
2018-03-31	67
2018-06-30	58
2018-09-30	50
2018-12-31	46
2019-03-31	39
2019-06-30	33
2019-09-30	28
2019-12-31	25
2020-03-31	25
2020-06-30	25
2020-09-30	26
2020-12-31	25
2021-03-31	18
2021-06-30	17
2021-09-30	16
2021-12-31	8
2022-03-31	8
2022-06-30	10
2022-09-30	9
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0