Quarter	US dollars
2004-12-31	50
2005-03-31	30
2005-06-30	36
2005-09-30	14
2005-12-31	15
2006-03-31	16
2006-06-30	15
2006-09-30	71
2006-12-31	76
2007-03-31	90
2007-06-30	56
2007-09-30	14
2007-12-31	12
2008-03-31	30
2008-06-30	42
2008-09-30	46
2008-12-31	56
2009-03-31	42
2009-06-30	20
2009-09-30	30
2009-12-31	27
2010-03-31	41
2010-06-30	96
2010-09-30	110
2010-12-31	77
2011-03-31	160
2011-06-30	133
2011-09-30	107
2011-12-31	161
2012-03-31	67
2012-06-30	42
2012-09-30	45
2012-12-31	147
2013-03-31	131
2013-06-30	114
2013-09-30	105
2013-12-31	200
2014-03-31	55
2014-06-30	27
2014-09-30	24
2014-12-31	83
2015-03-31	43
2015-06-30	33
2015-09-30	35
2015-12-31	22
2016-03-31	1
2016-06-30	3
2016-09-30	10
2016-12-31	44
2017-03-31	66
2017-06-30	90
2017-09-30	87
2017-12-31	91
2018-03-31	546
2018-06-30	504
2018-09-30	95
2018-12-31	88
2019-03-31	156
2019-06-30	159
2019-09-30	153
2019-12-31	153
2020-03-31	64
2020-06-30	115
2020-09-30	110
2020-12-31	132
2021-03-31	124
2021-06-30	119
2021-09-30	74
2021-12-31	50
2022-03-31	42
2022-06-30	32
2022-09-30	27
2022-12-31	10
2023-03-31	10
2023-06-30	8
2023-09-30	36