Quarter	US dollars
2004-12-31	71
2005-03-31	60
2005-06-30	81
2005-09-30	64
2005-12-31	72
2006-03-31	134
2006-06-30	213
2006-09-30	247
2006-12-31	237
2007-03-31	137
2007-06-30	375
2007-09-30	538
2007-12-31	719
2008-03-31	690
2008-06-30	299
2008-09-30	135
2008-12-31	63
2009-03-31	224
2009-06-30	94
2009-09-30	184
2009-12-31	115
2010-03-31	224
2010-06-30	-224
2010-09-30	-241
2010-12-31	16
2011-03-31	-42
2011-06-30	124
2011-09-30	-572
2011-12-31	48
2012-03-31	149
2012-06-30	85
2012-09-30	15
2012-12-31	-123
2013-03-31	-121
2013-06-30	-5
2013-09-30	168
2013-12-31	-99
2014-03-31	197
2014-06-30	287
2014-09-30	459
2014-12-31	167
2015-03-31	389
2015-06-30	329
2015-09-30	-56
2015-12-31	3
2016-03-31	124
2016-06-30	125
2016-09-30	135
2016-12-31	151
2017-03-31	149
2017-06-30	51
2017-09-30	165
2017-12-31	163
2018-03-31	115
2018-06-30	169
2018-09-30	177
2018-12-31	254
2019-03-31	-65
2019-06-30	-92
2019-09-30	-84
2019-12-31	-95
2020-03-31	-133
2020-06-30	-74
2020-09-30	-129
2020-12-31	-81
2021-03-31	-84
2021-06-30	-68
2021-09-30	-92
2021-12-31	40
2022-03-31	42
2022-06-30	29
2022-09-30	30
2022-12-31	28
2023-03-31	27
2023-06-30	65
2023-09-30	40