Quarter	US dollars
2004-12-31	4
2005-03-31	38
2005-06-30	22
2005-09-30	28
2005-12-31	22
2006-03-31	26
2006-06-30	24
2006-09-30	28
2006-12-31	31
2007-03-31	31
2007-06-30	54
2007-09-30	33
2007-12-31	44
2008-03-31	34
2008-06-30	46
2008-09-30	45
2008-12-31	24
2009-03-31	29
2009-06-30	33
2009-09-30	30
2009-12-31	19
2010-03-31	11
2010-06-30	108
2010-09-30	142
2010-12-31	191
2011-03-31	26
2011-06-30	-18
2011-09-30	75
2011-12-31	17
2012-03-31	8
2012-06-30	38
2012-09-30	50
2012-12-31	112
2013-03-31	150
2013-06-30	171
2013-09-30	126
2013-12-31	144
2014-03-31	10
2014-06-30	7
2014-09-30	182
2014-12-31	131
2015-03-31	64
2015-06-30	55
2015-09-30	109
2015-12-31	120
2016-03-31	88
2016-06-30	148
2016-09-30	164
2016-12-31	92
2017-03-31	326
2017-06-30	103
2017-09-30	38
2017-12-31	65
2018-03-31	317
2018-06-30	277
2018-09-30	29
2018-12-31	-9
2019-03-31	163
2019-06-30	131
2019-09-30	108
2019-12-31	63
2020-03-31	41
2020-06-30	44
2020-09-30	34
2020-12-31	34
2021-03-31	23
2021-06-30	6
2021-09-30	38
2021-12-31	27
2022-03-31	-5
2022-06-30	-9
2022-09-30	-1
2022-12-31	11
2023-03-31	24
2023-06-30	32
2023-09-30	27