Quarter	US dollars
2004-12-31	31
2005-03-31	28
2005-06-30	25
2005-09-30	21
2005-12-31	24
2006-03-31	47
2006-06-30	52
2006-09-30	88
2006-12-31	108
2007-03-31	73
2007-06-30	86
2007-09-30	47
2007-12-31	544
2008-03-31	50
2008-06-30	46
2008-09-30	34
2008-12-31	9
2009-03-31	11
2009-06-30	7
2009-09-30	6
2009-12-31	18
2010-03-31	14
2010-06-30	81
2010-09-30	112
2010-12-31	70
2011-03-31	48
2011-06-30	64
2011-09-30	67
2011-12-31	178
2012-03-31	141
2012-06-30	141
2012-09-30	121
2012-12-31	238
2013-03-31	121
2013-06-30	214
2013-09-30	125
2013-12-31	174
2014-03-31	180
2014-06-30	169
2014-09-30	97
2014-12-31	92
2015-03-31	82
2015-06-30	25
2015-09-30	26
2015-12-31	24
2016-03-31	26
2016-06-30	24
2016-09-30	26
2016-12-31	25
2017-03-31	25
2017-06-30	27
2017-09-30	32
2017-12-31	28
2018-03-31	28
2018-06-30	28
2018-09-30	27
2018-12-31	3
2019-03-31	3
2019-06-30	3
2019-09-30	2
2019-12-31	4
2020-03-31	22
2020-06-30	4
2020-09-30	1
2020-12-31	4
2021-03-31	4
2021-06-30	4
2021-09-30	4
2021-12-31	4
2022-03-31	4
2022-06-30	2
2022-09-30	2
2022-12-31	2
2023-03-31	4
2023-06-30	3
2023-09-30	2