Quarter	US dollars
2004-12-31	10
2005-03-31	9
2005-06-30	13
2005-09-30	14
2005-12-31	22
2006-03-31	23
2006-06-30	18
2006-09-30	21
2006-12-31	31
2007-03-31	25
2007-06-30	26
2007-09-30	37
2007-12-31	40
2008-03-31	22
2008-06-30	26
2008-09-30	32
2008-12-31	30
2009-03-31	93
2009-06-30	63
2009-09-30	88
2009-12-31	89
2010-03-31	86
2010-06-30	39
2010-09-30	43
2010-12-31	55
2011-03-31	42
2011-06-30	42
2011-09-30	37
2011-12-31	36
2012-03-31	35
2012-06-30	39
2012-09-30	39
2012-12-31	37
2013-03-31	27
2013-06-30	26
2013-09-30	24
2013-12-31	20
2014-03-31	17
2014-06-30	21
2014-09-30	18
2014-12-31	19
2015-03-31	31
2015-06-30	39
2015-09-30	42
2015-12-31	31
2016-03-31	32
2016-06-30	27
2016-09-30	21
2016-12-31	16
2017-03-31	15
2017-06-30	18
2017-09-30	20
2017-12-31	18
2018-03-31	14
2018-06-30	22
2018-09-30	9
2018-12-31	17
2019-03-31	3
2019-06-30	0
2019-09-30	-1
2019-12-31	1
2020-03-31	2
2020-06-30	2
2020-09-30	1
2020-12-31	5
2021-03-31	19
2021-06-30	18
2021-09-30	23
2021-12-31	18
2022-03-31	16
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0