Quarter	US dollars
2004-12-31	52
2005-03-31	51
2005-06-30	50
2005-09-30	16
2005-12-31	21
2006-03-31	28
2006-06-30	70
2006-09-30	92
2006-12-31	78
2007-03-31	73
2007-06-30	82
2007-09-30	53
2007-12-31	40
2008-03-31	183
2008-06-30	342
2008-09-30	41
2008-12-31	46
2009-03-31	275
2009-06-30	247
2009-09-30	248
2009-12-31	160
2010-03-31	288
2010-06-30	202
2010-09-30	452
2010-12-31	427
2011-03-31	470
2011-06-30	477
2011-09-30	513
2011-12-31	493
2012-03-31	499
2012-06-30	478
2012-09-30	484
2012-12-31	105
2013-03-31	103
2013-06-30	102
2013-09-30	26
2013-12-31	26
2014-03-31	27
2014-06-30	29
2014-09-30	34
2014-12-31	28
2015-03-31	22
2015-06-30	20
2015-09-30	14
2015-12-31	13
2016-03-31	12
2016-06-30	8
2016-09-30	29
2016-12-31	9
2017-03-31	10
2017-06-30	21
2017-09-30	13
2017-12-31	22
2018-03-31	14
2018-06-30	12
2018-09-30	16
2018-12-31	9
2019-03-31	13
2019-06-30	11
2019-09-30	67
2019-12-31	15
2020-03-31	9
2020-06-30	12
2020-09-30	43
2020-12-31	35
2021-03-31	21
2021-06-30	12
2021-09-30	20
2021-12-31	15
2022-03-31	20
2022-06-30	15
2022-09-30	13
2022-12-31	13
2023-03-31	11
2023-06-30	7
2023-09-30	16