Quarter	US dollars
2004-12-31	2
2005-03-31	11
2005-06-30	27
2005-09-30	11
2005-12-31	7
2006-03-31	12
2006-06-30	11
2006-09-30	11
2006-12-31	10
2007-03-31	67
2007-06-30	6
2007-09-30	0
2007-12-31	2
2008-03-31	0
2008-06-30	370
2008-09-30	533
2008-12-31	68
2009-03-31	40
2009-06-30	15
2009-09-30	64
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	27056
2010-12-31	138408
2011-03-31	142416
2011-06-30	149100
2011-09-30	167213
2011-12-31	172092
2012-03-31	115755
2012-06-30	104089
2012-09-30	95875
2012-12-31	132642
2013-03-31	382245
2013-06-30	364774
2013-09-30	289840
2013-12-31	247294
2014-03-31	226408
2014-06-30	251451
2014-09-30	238141
2014-12-31	197963
2015-03-31	200884
2015-06-30	181813
2015-09-30	181511
2015-12-31	138575
2016-03-31	146802
2016-06-30	117860
2016-09-30	115564
2016-12-31	98346
2017-03-31	97577
2017-06-30	97077
2017-09-30	114222
2017-12-31	78089
2018-03-31	160132
2018-06-30	125739
2018-09-30	137635
2018-12-31	125937
2019-03-31	138244
2019-06-30	169013
2019-09-30	192194
2019-12-31	253112
2020-03-31	231498
2020-06-30	213947
2020-09-30	201069
2020-12-31	200546
2021-03-31	240321
2021-06-30	250494
2021-09-30	270547
2021-12-31	365345
2022-03-31	465216
2022-06-30	460657
2022-09-30	509094
2022-12-31	476154
2023-03-31	420147
2023-06-30	356121
2023-09-30	344177