Quarter	US dollars
2004-12-31	21
2005-03-31	25
2005-06-30	38
2005-09-30	25
2005-12-31	21
2006-03-31	17
2006-06-30	13
2006-09-30	17
2006-12-31	10
2007-03-31	14
2007-06-30	14
2007-09-30	24
2007-12-31	102
2008-03-31	103
2008-06-30	66
2008-09-30	73
2008-12-31	223
2009-03-31	195
2009-06-30	138
2009-09-30	150
2009-12-31	124
2010-03-31	135
2010-06-30	157
2010-09-30	158
2010-12-31	135
2011-03-31	122
2011-06-30	112
2011-09-30	134
2011-12-31	118
2012-03-31	115
2012-06-30	143
2012-09-30	155
2012-12-31	123
2013-03-31	112
2013-06-30	74
2013-09-30	73
2013-12-31	68
2014-03-31	83
2014-06-30	75
2014-09-30	79
2014-12-31	98
2015-03-31	110
2015-06-30	79
2015-09-30	62
2015-12-31	50
2016-03-31	58
2016-06-30	85
2016-09-30	62
2016-12-31	33
2017-03-31	31
2017-06-30	32
2017-09-30	30
2017-12-31	24
2018-03-31	21
2018-06-30	9
2018-09-30	18
2018-12-31	8
2019-03-31	12
2019-06-30	15
2019-09-30	14
2019-12-31	16
2020-03-31	42
2020-06-30	28
2020-09-30	26
2020-12-31	30
2021-03-31	34
2021-06-30	15
2021-09-30	20
2021-12-31	28
2022-03-31	12
2022-06-30	12
2022-09-30	14
2022-12-31	15
2023-03-31	10
2023-06-30	12
2023-09-30	6