Quarter	US dollars
2004-12-31	10
2005-03-31	8
2005-06-30	11
2005-09-30	2
2005-12-31	10
2006-03-31	21
2006-06-30	18
2006-09-30	21
2006-12-31	440
2007-03-31	82
2007-06-30	128
2007-09-30	167
2007-12-31	127
2008-03-31	129
2008-06-30	109
2008-09-30	150
2008-12-31	116
2009-03-31	138
2009-06-30	158
2009-09-30	144
2009-12-31	97
2010-03-31	167
2010-06-30	69
2010-09-30	432
2010-12-31	617
2011-03-31	152
2011-06-30	169
2011-09-30	174
2011-12-31	156
2012-03-31	131
2012-06-30	115
2012-09-30	363
2012-12-31	373
2013-03-31	396
2013-06-30	447
2013-09-30	887
2013-12-31	902
2014-03-31	855
2014-06-30	898
2014-09-30	815
2014-12-31	734
2015-03-31	719
2015-06-30	664
2015-09-30	577
2015-12-31	535
2016-03-31	659
2016-06-30	667
2016-09-30	442
2016-12-31	454
2017-03-31	449
2017-06-30	71
2017-09-30	25
2017-12-31	74
2018-03-31	86
2018-06-30	65
2018-09-30	65
2018-12-31	33
2019-03-31	38
2019-06-30	34
2019-09-30	46
2019-12-31	8
2020-03-31	14
2020-06-30	74
2020-09-30	39
2020-12-31	90
2021-03-31	4
2021-06-30	6
2021-09-30	5
2021-12-31	3
2022-03-31	0
2022-06-30	10
2022-09-30	13
2022-12-31	10
2023-03-31	15
2023-06-30	12
2023-09-30	13