Quarter	US dollars
2004-12-31	25
2005-03-31	45
2005-06-30	7
2005-09-30	23
2005-12-31	41
2006-03-31	154
2006-06-30	266
2006-09-30	166
2006-12-31	192
2007-03-31	159
2007-06-30	32
2007-09-30	39
2007-12-31	141
2008-03-31	115
2008-06-30	197
2008-09-30	232
2008-12-31	213
2009-03-31	130
2009-06-30	235
2009-09-30	269
2009-12-31	286
2010-03-31	105
2010-06-30	75
2010-09-30	184
2010-12-31	191
2011-03-31	229
2011-06-30	297
2011-09-30	229
2011-12-31	201
2012-03-31	30
2012-06-30	31
2012-09-30	65
2012-12-31	215
2013-03-31	628
2013-06-30	100
2013-09-30	191
2013-12-31	50
2014-03-31	-70
2014-06-30	137
2014-09-30	216
2014-12-31	117
2015-03-31	94
2015-06-30	126
2015-09-30	118
2015-12-31	96
2016-03-31	119
2016-06-30	121
2016-09-30	86
2016-12-31	90
2017-03-31	138
2017-06-30	209
2017-09-30	188
2017-12-31	162
2018-03-31	145
2018-06-30	104
2018-09-30	120
2018-12-31	57
2019-03-31	95
2019-06-30	183
2019-09-30	71
2019-12-31	148
2020-03-31	71
2020-06-30	59
2020-09-30	67
2020-12-31	132
2021-03-31	113
2021-06-30	145
2021-09-30	16
2021-12-31	77
2022-03-31	120
2022-06-30	94
2022-09-30	36
2022-12-31	32
2023-03-31	28
2023-06-30	52
2023-09-30	44