Quarter	US dollars
2004-12-31	52
2005-03-31	15
2005-06-30	22
2005-09-30	14
2005-12-31	12
2006-03-31	9
2006-06-30	9
2006-09-30	17
2006-12-31	4
2007-03-31	29
2007-06-30	28
2007-09-30	29
2007-12-31	64
2008-03-31	151
2008-06-30	90
2008-09-30	84
2008-12-31	55
2009-03-31	13
2009-06-30	38
2009-09-30	35
2009-12-31	24
2010-03-31	15
2010-06-30	37
2010-09-30	39
2010-12-31	56
2011-03-31	58
2011-06-30	51
2011-09-30	55
2011-12-31	127
2012-03-31	46
2012-06-30	30
2012-09-30	338
2012-12-31	103
2013-03-31	102
2013-06-30	74
2013-09-30	55
2013-12-31	46
2014-03-31	25
2014-06-30	19
2014-09-30	36
2014-12-31	91
2015-03-31	92
2015-06-30	170
2015-09-30	126
2015-12-31	84
2016-03-31	78
2016-06-30	38
2016-09-30	36
2016-12-31	34
2017-03-31	59
2017-06-30	48
2017-09-30	98
2017-12-31	111
2018-03-31	154
2018-06-30	86
2018-09-30	51
2018-12-31	286
2019-03-31	68
2019-06-30	70
2019-09-30	78
2019-12-31	254
2020-03-31	79
2020-06-30	83
2020-09-30	115
2020-12-31	130
2021-03-31	105
2021-06-30	586
2021-09-30	549
2021-12-31	559
2022-03-31	548
2022-06-30	14
2022-09-30	79
2022-12-31	53
2023-03-31	15
2023-06-30	22
2023-09-30	12