Quarter	US dollars
2004-12-31	4
2005-03-31	2
2005-06-30	16
2005-09-30	9
2005-12-31	7
2006-03-31	21
2006-06-30	11
2006-09-30	6
2006-12-31	8
2007-03-31	4
2007-06-30	6
2007-09-30	4
2007-12-31	2
2008-03-31	10
2008-06-30	20
2008-09-30	39
2008-12-31	30
2009-03-31	36
2009-06-30	38
2009-09-30	38
2009-12-31	27
2010-03-31	44
2010-06-30	10
2010-09-30	115
2010-12-31	125
2011-03-31	135
2011-06-30	75
2011-09-30	41
2011-12-31	65
2012-03-31	82
2012-06-30	136
2012-09-30	131
2012-12-31	136
2013-03-31	124
2013-06-30	30
2013-09-30	159
2013-12-31	122
2014-03-31	150
2014-06-30	157
2014-09-30	57
2014-12-31	80
2015-03-31	56
2015-06-30	60
2015-09-30	248
2015-12-31	242
2016-03-31	73
2016-06-30	66
2016-09-30	40
2016-12-31	54
2017-03-31	199
2017-06-30	153
2017-09-30	117
2017-12-31	111
2018-03-31	13
2018-06-30	132
2018-09-30	133
2018-12-31	234
2019-03-31	223
2019-06-30	130
2019-09-30	116
2019-12-31	0
2020-03-31	2
2020-06-30	1
2020-09-30	50
2020-12-31	52
2021-03-31	41
2021-06-30	40
2021-09-30	0
2021-12-31	0
2022-03-31	1
2022-06-30	1
2022-09-30	1
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0