Quarter	US dollars
2004-12-31	6
2005-03-31	6
2005-06-30	7
2005-09-30	5
2005-12-31	5
2006-03-31	5
2006-06-30	7
2006-09-30	6
2006-12-31	12
2007-03-31	4
2007-06-30	16
2007-09-30	49
2007-12-31	56
2008-03-31	54
2008-06-30	52
2008-09-30	59
2008-12-31	85
2009-03-31	86
2009-06-30	132
2009-09-30	173
2009-12-31	26
2010-03-31	11
2010-06-30	19
2010-09-30	49
2010-12-31	14
2011-03-31	40
2011-06-30	43
2011-09-30	36
2011-12-31	28
2012-03-31	26
2012-06-30	28
2012-09-30	40
2012-12-31	45
2013-03-31	39
2013-06-30	224
2013-09-30	168
2013-12-31	172
2014-03-31	160
2014-06-30	217
2014-09-30	164
2014-12-31	186
2015-03-31	251
2015-06-30	179
2015-09-30	109
2015-12-31	113
2016-03-31	106
2016-06-30	60
2016-09-30	62
2016-12-31	47
2017-03-31	56
2017-06-30	73
2017-09-30	58
2017-12-31	28
2018-03-31	24
2018-06-30	12
2018-09-30	59
2018-12-31	34
2019-03-31	27
2019-06-30	36
2019-09-30	51
2019-12-31	42
2020-03-31	46
2020-06-30	53
2020-09-30	52
2020-12-31	25
2021-03-31	46
2021-06-30	40
2021-09-30	36
2021-12-31	49
2022-03-31	5
2022-06-30	58
2022-09-30	28
2022-12-31	2
2023-03-31	11
2023-06-30	11
2023-09-30	49