Quarter	US dollars
2011-06-30	212
2011-09-30	12
2011-12-31	8
2012-03-31	8
2012-06-30	11
2012-09-30	11
2012-12-31	16
2013-03-31	15
2013-06-30	70
2013-09-30	76
2013-12-31	107
2014-03-31	90
2014-06-30	77
2014-09-30	44
2014-12-31	14
2015-03-31	0
2015-06-30	11
2015-09-30	0
2015-12-31	7
2016-03-31	95
2016-06-30	162
2016-09-30	175
2016-12-31	97
2017-03-31	1
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	1
2019-09-30	0
2019-12-31	3
2020-03-31	0
2020-06-30	6
2020-09-30	31
2020-12-31	37
2021-03-31	32
2021-06-30	55
2021-09-30	53
2021-12-31	7
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