Quarter	US dollars
2004-12-31	4
2005-03-31	8
2005-06-30	4
2005-09-30	2
2005-12-31	2
2006-03-31	5
2006-06-30	4
2006-09-30	24
2006-12-31	10
2007-03-31	8
2007-06-30	8
2007-09-30	22
2007-12-31	38
2008-03-31	12
2008-06-30	12
2008-09-30	11
2008-12-31	19
2009-03-31	26
2009-06-30	20
2009-09-30	10
2009-12-31	10
2010-03-31	11
2010-06-30	10
2010-09-30	9
2010-12-31	13
2011-03-31	71
2011-06-30	85
2011-09-30	81
2011-12-31	68
2012-03-31	66
2012-06-30	63
2012-09-30	74
2012-12-31	70
2013-03-31	65
2013-06-30	61
2013-09-30	63
2013-12-31	56
2014-03-31	53
2014-06-30	55
2014-09-30	55
2014-12-31	52
2015-03-31	43
2015-06-30	44
2015-09-30	42
2015-12-31	41
2016-03-31	45
2016-06-30	43
2016-09-30	43
2016-12-31	41
2017-03-31	41
2017-06-30	43
2017-09-30	44
2017-12-31	45
2018-03-31	45
2018-06-30	44
2018-09-30	43
2018-12-31	42
2019-03-31	42
2019-06-30	42
2019-09-30	42
2019-12-31	42
2020-03-31	40
2020-06-30	42
2020-09-30	43
2020-12-31	45
2021-03-31	44
2021-06-30	44
2021-09-30	43
2021-12-31	43
2022-03-31	42
2022-06-30	40
2022-09-30	38
2022-12-31	40
2023-03-31	41
2023-06-30	41
2023-09-30	40