Quarter	US dollars
2004-12-31	71
2005-03-31	79
2005-06-30	73
2005-09-30	73
2005-12-31	86
2006-03-31	88
2006-06-30	87
2006-09-30	92
2006-12-31	88
2007-03-31	141
2007-06-30	138
2007-09-30	116
2007-12-31	88
2008-03-31	99
2008-06-30	76
2008-09-30	121
2008-12-31	72
2009-03-31	80
2009-06-30	92
2009-09-30	88
2009-12-31	86
2010-03-31	73
2010-06-30	142
2010-09-30	117
2010-12-31	149
2011-03-31	106
2011-06-30	90
2011-09-30	78
2011-12-31	80
2012-03-31	72
2012-06-30	67
2012-09-30	58
2012-12-31	70
2013-03-31	64
2013-06-30	27
2013-09-30	23
2013-12-31	8
2014-03-31	5
2014-06-30	15
2014-09-30	13
2014-12-31	16
2015-03-31	12
2015-06-30	6
2015-09-30	2
2015-12-31	0
2016-03-31	-12
2016-06-30	-15
2016-09-30	6
2016-12-31	-1
2017-03-31	8
2017-06-30	19
2017-09-30	23
2017-12-31	7
2018-03-31	4
2018-06-30	9
2018-09-30	-33
2018-12-31	20
2019-03-31	-21
2019-06-30	-8
2019-09-30	32
2019-12-31	17
2020-03-31	2
2020-06-30	15
2020-09-30	-4
2020-12-31	3
2021-03-31	-6
2021-06-30	28
2021-09-30	4
2021-12-31	-7
2022-03-31	-4
2022-06-30	9
2022-09-30	19
2022-12-31	0
2023-03-31	4
2023-06-30	-9
2023-09-30	40