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	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	2
2008-06-30	2
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	0
2010-12-31	5
2011-03-31	0
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	17
2012-09-30	0
2012-12-31	0
2013-03-31	0
2013-06-30	0
2013-09-30	0
2013-12-31	10
2014-03-31	22
2014-06-30	17
2014-09-30	23
2014-12-31	23
2015-03-31	13
2015-06-30	33
2015-09-30	35
2015-12-31	30
2016-03-31	36
2016-06-30	44
2016-09-30	42
2016-12-31	32
2017-03-31	19
2017-06-30	16
2017-09-30	39
2017-12-31	70
2018-03-31	49
2018-06-30	24
2018-09-30	23
2018-12-31	40
2019-03-31	42
2019-06-30	24
2019-09-30	5
2019-12-31	32
2020-03-31	25
2020-06-30	0
2020-09-30	23
2020-12-31	33
2021-03-31	18
2021-06-30	18
2021-09-30	32
2021-12-31	22
2022-03-31	0
2022-06-30	0
2022-09-30	40
2022-12-31	66
2023-03-31	48
2023-06-30	30
2023-09-30	43