Quarter	US dollars
2004-12-31	58
2005-03-31	96
2005-06-30	79
2005-09-30	87
2005-12-31	70
2006-03-31	38
2006-06-30	41
2006-09-30	30
2006-12-31	41
2007-03-31	41
2007-06-30	80
2007-09-30	43
2007-12-31	24
2008-03-31	40
2008-06-30	44
2008-09-30	50
2008-12-31	52
2009-03-31	46
2009-06-30	41
2009-09-30	8
2009-12-31	39
2010-03-31	39
2010-06-30	45
2010-09-30	41
2010-12-31	44
2011-03-31	50
2011-06-30	45
2011-09-30	120
2011-12-31	179
2012-03-31	131
2012-06-30	409
2012-09-30	258
2012-12-31	348
2013-03-31	199
2013-06-30	296
2013-09-30	212
2013-12-31	278
2014-03-31	253
2014-06-30	212
2014-09-30	300
2014-12-31	259
2015-03-31	114
2015-06-30	69
2015-09-30	85
2015-12-31	129
2016-03-31	180
2016-06-30	152
2016-09-30	134
2016-12-31	66
2017-03-31	76
2017-06-30	370
2017-09-30	537
2017-12-31	573
2018-03-31	553
2018-06-30	564
2018-09-30	532
2018-12-31	526
2019-03-31	491
2019-06-30	631
2019-09-30	607
2019-12-31	458
2020-03-31	294
2020-06-30	163
2020-09-30	132
2020-12-31	11
2021-03-31	21
2021-06-30	6
2021-09-30	7
2021-12-31	5
2022-03-31	4
2022-06-30	2
2022-09-30	3
2022-12-31	2
2023-03-31	3
2023-06-30	2
2023-09-30	2