Quarter	US dollars
2004-12-31	19
2005-03-31	17
2005-06-30	14
2005-09-30	11
2005-12-31	14
2006-03-31	7
2006-06-30	18
2006-09-30	22
2006-12-31	37
2007-03-31	41
2007-06-30	60
2007-09-30	67
2007-12-31	62
2008-03-31	66
2008-06-30	70
2008-09-30	66
2008-12-31	52
2009-03-31	135
2009-06-30	77
2009-09-30	80
2009-12-31	74
2010-03-31	130
2010-06-30	160
2010-09-30	172
2010-12-31	92
2011-03-31	120
2011-06-30	96
2011-09-30	89
2011-12-31	82
2012-03-31	82
2012-06-30	78
2012-09-30	61
2012-12-31	65
2013-03-31	55
2013-06-30	53
2013-09-30	78
2013-12-31	76
2014-03-31	57
2014-06-30	82
2014-09-30	78
2014-12-31	52
2015-03-31	40
2015-06-30	41
2015-09-30	55
2015-12-31	36
2016-03-31	36
2016-06-30	21
2016-09-30	21
2016-12-31	20
2017-03-31	18
2017-06-30	25
2017-09-30	21
2017-12-31	20
2018-03-31	24
2018-06-30	7
2018-09-30	4
2018-12-31	4
2019-03-31	3
2019-06-30	4
2019-09-30	4
2019-12-31	1
2020-03-31	0
2020-06-30	2
2020-09-30	4
2020-12-31	4
2021-03-31	4
2021-06-30	3
2021-09-30	5
2021-12-31	3
2022-03-31	3
2022-06-30	2
2022-09-30	2
2022-12-31	3
2023-03-31	3
2023-06-30	5
2023-09-30	5