Quarter	US dollars
2004-12-31	15
2005-03-31	13
2005-06-30	13
2005-09-30	11
2005-12-31	15
2006-03-31	17
2006-06-30	24
2006-09-30	37
2006-12-31	35
2007-03-31	47
2007-06-30	167
2007-09-30	206
2007-12-31	82
2008-03-31	413
2008-06-30	277
2008-09-30	209
2008-12-31	141
2009-03-31	52
2009-06-30	53
2009-09-30	54
2009-12-31	50
2010-03-31	27
2010-06-30	31
2010-09-30	28
2010-12-31	25
2011-03-31	24
2011-06-30	58
2011-09-30	39
2011-12-31	51
2012-03-31	40
2012-06-30	60
2012-09-30	61
2012-12-31	58
2013-03-31	64
2013-06-30	65
2013-09-30	65
2013-12-31	51
2014-03-31	47
2014-06-30	44
2014-09-30	49
2014-12-31	56
2015-03-31	53
2015-06-30	35
2015-09-30	32
2015-12-31	36
2016-03-31	35
2016-06-30	35
2016-09-30	34
2016-12-31	37
2017-03-31	40
2017-06-30	96
2017-09-30	121
2017-12-31	41
2018-03-31	59
2018-06-30	98
2018-09-30	110
2018-12-31	72
2019-03-31	56
2019-06-30	93
2019-09-30	112
2019-12-31	137
2020-03-31	139
2020-06-30	82
2020-09-30	96
2020-12-31	105
2021-03-31	117
2021-06-30	108
2021-09-30	123
2021-12-31	152
2022-03-31	172
2022-06-30	116
2022-09-30	130
2022-12-31	90
2023-03-31	78
2023-06-30	77
2023-09-30	66