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	155
2006-12-31	160
2007-03-31	161
2007-06-30	152
2007-09-30	0
2007-12-31	0
2008-03-31	175
2008-06-30	8
2008-09-30	182
2008-12-31	280
2009-03-31	193
2009-06-30	379
2009-09-30	301
2009-12-31	287
2010-03-31	273
2010-06-30	132
2010-09-30	0
2010-12-31	0
2011-03-31	2
2011-06-30	2
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	0
2012-09-30	29
2012-12-31	0
2013-03-31	0
2013-06-30	3
2013-09-30	0
2013-12-31	0
2014-03-31	0
2014-06-30	41
2014-09-30	39
2014-12-31	41
2015-03-31	36
2015-06-30	77
2015-09-30	35
2015-12-31	30
2016-03-31	39
2016-06-30	36
2016-09-30	23
2016-12-31	30
2017-03-31	31
2017-06-30	32
2017-09-30	34
2017-12-31	0
2018-03-31	0
2018-06-30	-3
2018-09-30	160
2018-12-31	11
2019-03-31	25
2019-06-30	34
2019-09-30	47
2019-12-31	52
2020-03-31	61
2020-06-30	73
2020-09-30	81
2020-12-31	83
2021-03-31	88
2021-06-30	88
2021-09-30	88
2021-12-31	1
2022-03-31	1
2022-06-30	2
2022-09-30	3
2022-12-31	4
2023-03-31	4
2023-06-30	4
2023-09-30	4