Quarter	US dollars
2004-12-31	106
2005-03-31	83
2005-06-30	30
2005-09-30	57
2005-12-31	28
2006-03-31	17
2006-06-30	41
2006-09-30	62
2006-12-31	31
2007-03-31	27
2007-06-30	38
2007-09-30	24
2007-12-31	22
2008-03-31	40
2008-06-30	38
2008-09-30	36
2008-12-31	33
2009-03-31	21
2009-06-30	23
2009-09-30	21
2009-12-31	18
2010-03-31	30
2010-06-30	58
2010-09-30	93
2010-12-31	83
2011-03-31	218
2011-06-30	61
2011-09-30	30
2011-12-31	17
2012-03-31	30
2012-06-30	52
2012-09-30	26
2012-12-31	66
2013-03-31	77
2013-06-30	35
2013-09-30	165
2013-12-31	81
2014-03-31	57
2014-06-30	74
2014-09-30	8
2014-12-31	58
2015-03-31	56
2015-06-30	5
2015-09-30	6
2015-12-31	6
2016-03-31	3
2016-06-30	5
2016-09-30	8
2016-12-31	6
2017-03-31	5
2017-06-30	4
2017-09-30	3
2017-12-31	4
2018-03-31	1
2018-06-30	5
2018-09-30	4
2018-12-31	6
2019-03-31	7
2019-06-30	4
2019-09-30	4