Quarter	US dollars
2004-12-31	6
2005-03-31	9
2005-06-30	13
2005-09-30	9
2005-12-31	10
2006-03-31	9
2006-06-30	15
2006-09-30	11
2006-12-31	10
2007-03-31	49
2007-06-30	72
2007-09-30	73
2007-12-31	54
2008-03-31	68
2008-06-30	66
2008-09-30	43
2008-12-31	60
2009-03-31	178
2009-06-30	188
2009-09-30	202
2009-12-31	215
2010-03-31	203
2010-06-30	172
2010-09-30	266
2010-12-31	290
2011-03-31	139
2011-06-30	51
2011-09-30	69
2011-12-31	65
2012-03-31	155
2012-06-30	154
2012-09-30	155
2012-12-31	173
2013-03-31	255
2013-06-30	276
2013-09-30	269
2013-12-31	231
2014-03-31	285
2014-06-30	258
2014-09-30	255
2014-12-31	234
2015-03-31	208
2015-06-30	165
2015-09-30	142
2015-12-31	133
2016-03-31	114
2016-06-30	133
2016-09-30	92
2016-12-31	98
2017-03-31	100
2017-06-30	97
2017-09-30	105
2017-12-31	104
2018-03-31	88
2018-06-30	81
2018-09-30	73
2018-12-31	40
2019-03-31	30
2019-06-30	28
2019-09-30	26
2019-12-31	26
2020-03-31	26
2020-06-30	26
2020-09-30	25
2020-12-31	31
2021-03-31	30
2021-06-30	41
2021-09-30	23
2021-12-31	8
2022-03-31	8
2022-06-30	9
2022-09-30	15
2022-12-31	37
2023-03-31	49
2023-06-30	52
2023-09-30	105