Quarter	US dollars
1999-03-31	26
1999-06-30	106
1999-09-30	208
1999-12-31	85
2000-03-31	99
2000-06-30	67
2000-09-30	93
2000-12-31	70
2001-03-31	59
2001-06-30	65
2001-09-30	69
2001-12-31	85
2002-03-31	85
2002-06-30	351
2002-09-30	28
2002-12-31	27
2003-03-31	16
2003-06-30	19
2003-09-30	31
2003-12-31	34
2004-03-31	19
2004-06-30	16
2004-09-30	26
2004-12-31	35
2005-03-31	32
2005-06-30	15
2005-09-30	12
2005-12-31	60
2006-03-31	17
2006-06-30	86
2006-09-30	99
2006-12-31	63
2007-03-31	134
2007-06-30	30
2007-09-30	39
2007-12-31	1
2008-03-31	1
2008-06-30	84
2008-09-30	63
2008-12-31	76
2009-03-31	41
2009-06-30	18
2009-09-30	24
2009-12-31	38
2010-03-31	149
2010-06-30	150
2010-09-30	147
2010-12-31	-301
2011-03-31	124
2011-06-30	34
2011-09-30	20
2011-12-31	54
2012-03-31	51
2012-06-30	56
2012-09-30	35
2012-12-31	44
2013-03-31	50
2013-06-30	31
2013-09-30	93
2013-12-31	32
2014-03-31	-17
2014-06-30	8
2014-09-30	-2
2014-12-31	63
2015-03-31	10
2015-06-30	47
2015-09-30	36
2015-12-31	3
2016-03-31	8
2016-06-30	9
2016-09-30	9
2016-12-31	12
2017-03-31	3
2017-06-30	22
2017-09-30	2
2017-12-31	5
2018-03-31	2
2018-06-30	10
2018-09-30	36
2018-12-31	102
2019-03-31	19
2019-06-30	9
2019-09-30	13
2019-12-31	4
2020-03-31	-2
2020-06-30	4
2020-09-30	-3
2020-12-31	12
2021-03-31	21
2021-06-30	4
2021-09-30	31
2021-12-31	24
2022-03-31	24
2022-06-30	32
2022-09-30	52
2022-12-31	31
2023-03-31	44
2023-06-30	49
2023-09-30	65