Quarter	US dollars
2004-12-31	0
2005-03-31	4
2005-06-30	5
2005-09-30	4
2005-12-31	22
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	2
2007-06-30	20
2007-09-30	31
2007-12-31	0
2008-03-31	2
2008-06-30	2
2008-09-30	11
2008-12-31	4
2009-03-31	226
2009-06-30	219
2009-09-30	18
2009-12-31	16
2010-03-31	5
2010-06-30	1
2010-09-30	0
2010-12-31	0
2011-03-31	6
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	3
2012-09-30	27
2012-12-31	32
2013-03-31	29
2013-06-30	196
2013-09-30	180
2013-12-31	174
2014-03-31	12
2014-06-30	109
2014-09-30	88
2014-12-31	12
2015-03-31	13
2015-06-30	14
2015-09-30	6
2015-12-31	15
2016-03-31	16
2016-06-30	15
2016-09-30	14
2016-12-31	18
2017-03-31	20
2017-06-30	22
2017-09-30	8
2017-12-31	12
2018-03-31	13
2018-06-30	8
2018-09-30	8
2018-12-31	8
2019-03-31	7
2019-06-30	4
2019-09-30	6
2019-12-31	4
2020-03-31	10
2020-06-30	4
2020-09-30	35
2020-12-31	11
2021-03-31	36
2021-06-30	39
2021-09-30	49
2021-12-31	49
2022-03-31	57
2022-06-30	104
2022-09-30	65
2022-12-31	64
2023-03-31	16
2023-06-30	33
2023-09-30	153