Quarter	US dollars
2004-12-31	12
2005-03-31	13
2005-06-30	11
2005-09-30	53
2005-12-31	65
2006-03-31	76
2006-06-30	92
2006-09-30	62
2006-12-31	59
2007-03-31	47
2007-06-30	56
2007-09-30	55
2007-12-31	56
2008-03-31	52
2008-06-30	54
2008-09-30	45
2008-12-31	49
2009-03-31	49
2009-06-30	48
2009-09-30	50
2009-12-31	50
2010-03-31	44
2010-06-30	45
2010-09-30	44
2010-12-31	44
2011-03-31	40
2011-06-30	42
2011-09-30	26
2011-12-31	45
2012-03-31	50
2012-06-30	50
2012-09-30	21
2012-12-31	5
2013-03-31	26
2013-06-30	29
2013-09-30	3
2013-12-31	3
2014-03-31	3
2014-06-30	7
2014-09-30	5
2014-12-31	11
2015-03-31	10
2015-06-30	3
2015-09-30	6
2015-12-31	4
2016-03-31	9
2016-06-30	8
2016-09-30	5
2016-12-31	1
2017-03-31	1
2017-06-30	17
2017-09-30	17
2017-12-31	23
2018-03-31	131
2018-06-30	148
2018-09-30	116
2018-12-31	120
2019-03-31	117
2019-06-30	120
2019-09-30	112
2019-12-31	115
2020-03-31	113
2020-06-30	115
2020-09-30	111
2020-12-31	112
2021-03-31	156
2021-06-30	1
2021-09-30	42
2021-12-31	39
2022-03-31	39
2022-06-30	40
2022-09-30	41
2022-12-31	41
2023-03-31	41
2023-06-30	41
2023-09-30	41