Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	4
2005-12-31	2
2006-03-31	0
2006-06-30	0
2006-09-30	24
2006-12-31	80
2007-03-31	53
2007-06-30	64
2007-09-30	26
2007-12-31	62
2008-03-31	52
2008-06-30	82
2008-09-30	96
2008-12-31	76
2009-03-31	219
2009-06-30	79
2009-09-30	72
2009-12-31	86
2010-03-31	89
2010-06-30	54
2010-09-30	60
2010-12-31	103
2011-03-31	117
2011-06-30	172
2011-09-30	171
2011-12-31	119
2012-03-31	189
2012-06-30	113
2012-09-30	132
2012-12-31	262
2013-03-31	217
2013-06-30	168
2013-09-30	173
2013-12-31	126
2014-03-31	160
2014-06-30	144
2014-09-30	107
2014-12-31	111
2015-03-31	97
2015-06-30	91
2015-09-30	48
2015-12-31	6
2016-03-31	0
2016-06-30	3
2016-09-30	0
2016-12-31	4
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	1
2018-03-31	8
2018-06-30	12
2018-09-30	8
2018-12-31	15
2019-03-31	8
2019-06-30	45
2019-09-30	94
2019-12-31	96
2020-03-31	105
2020-06-30	109
2020-09-30	1
2020-12-31	55
2021-03-31	37
2021-06-30	39
2021-09-30	1
2021-12-31	1
2022-03-31	1
2022-06-30	0
2022-09-30	1
2022-12-31	2
2023-03-31	3
2023-06-30	5
2023-09-30	1