Quarter	US dollars
1999-03-31	245
1999-06-30	117
1999-09-30	178
1999-12-31	58
2000-03-31	111
2000-06-30	50
2000-09-30	59
2000-12-31	28
2001-03-31	117
2001-06-30	58
2001-09-30	7
2001-12-31	25
2002-03-31	18
2002-06-30	22
2002-09-30	60
2002-12-31	71
2003-03-31	24
2003-06-30	53
2003-09-30	87
2003-12-31	19
2004-03-31	10
2004-06-30	8
2004-09-30	7
2004-12-31	7
2005-03-31	4
2005-06-30	5
2005-09-30	2
2005-12-31	23
2006-03-31	24
2006-06-30	17
2006-09-30	9
2006-12-31	18
2007-03-31	20
2007-06-30	11
2007-09-30	51
2007-12-31	172
2008-03-31	147
2008-06-30	102
2008-09-30	30
2008-12-31	16
2009-03-31	17
2009-06-30	35
2009-09-30	171
2009-12-31	107
2010-03-31	139
2010-06-30	19
2010-09-30	54
2010-12-31	51
2011-03-31	36
2011-06-30	57
2011-09-30	41
2011-12-31	60
2012-03-31	40
2012-06-30	46
2012-09-30	10
2012-12-31	78
2013-03-31	39
2013-06-30	45
2013-09-30	16
2013-12-31	29
2014-03-31	39
2014-06-30	23
2014-09-30	19
2014-12-31	64
2015-03-31	63
2015-06-30	49
2015-09-30	12
2015-12-31	89
2016-03-31	71
2016-06-30	45
2016-09-30	23
2016-12-31	38
2017-03-31	61
2017-06-30	34
2017-09-30	46
2017-12-31	59
2018-03-31	62
2018-06-30	53
2018-09-30	44
2018-12-31	72
2019-03-31	75
2019-06-30	89
2019-09-30	46
2019-12-31	61
2020-03-31	70
2020-06-30	69
2020-09-30	27
2020-12-31	22
2021-03-31	24
2021-06-30	26
2021-09-30	27
2021-12-31	36
2022-03-31	36
2022-06-30	43
2022-09-30	35
2022-12-31	73
2023-03-31	79
2023-06-30	36
2023-09-30	101