Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	12
2007-06-30	12
2007-09-30	12
2007-12-31	14
2008-03-31	14
2008-06-30	28
2008-09-30	30
2008-12-31	22
2009-03-31	17
2009-06-30	20
2009-09-30	19
2009-12-31	6
2010-03-31	5
2010-06-30	4
2010-09-30	3
2010-12-31	5
2011-03-31	6
2011-06-30	26
2011-09-30	81
2011-12-31	79
2012-03-31	78
2012-06-30	78
2012-09-30	16
2012-12-31	26
2013-03-31	41
2013-06-30	23
2013-09-30	70
2013-12-31	18
2014-03-31	3
2014-06-30	50
2014-09-30	66
2014-12-31	59
2015-03-31	39
2015-06-30	58
2015-09-30	11
2015-12-31	4
2016-03-31	-1
2016-06-30	16
2016-09-30	36
2016-12-31	64
2017-03-31	80
2017-06-30	36
2017-09-30	43
2017-12-31	41
2018-03-31	34
2018-06-30	16
2018-09-30	9
2018-12-31	22
2019-03-31	39
2019-06-30	33
2019-09-30	32
2019-12-31	32
2020-03-31	24
2020-06-30	25
2020-09-30	26
2020-12-31	20
2021-03-31	32
2021-06-30	40
2021-09-30	93
2021-12-31	100
2022-03-31	91
2022-06-30	91
2022-09-30	75
2022-12-31	42
2023-03-31	44
2023-06-30	62
2023-09-30	75