Quarter	US dollars
2004-12-31	31
2005-03-31	2
2005-06-30	90
2005-09-30	4
2005-12-31	17
2006-03-31	23
2006-06-30	18
2006-09-30	13
2006-12-31	18
2007-03-31	22
2007-06-30	18
2007-09-30	20
2007-12-31	22
2008-03-31	26
2008-06-30	26
2008-09-30	16
2008-12-31	19
2009-03-31	20
2009-06-30	18
2009-09-30	19
2009-12-31	27
2010-03-31	21
2010-06-30	24
2010-09-30	24
2010-12-31	25
2011-03-31	22
2011-06-30	31
2011-09-30	26
2011-12-31	85
2012-03-31	46
2012-06-30	50
2012-09-30	71
2012-12-31	40
2013-03-31	30
2013-06-30	39
2013-09-30	31
2013-12-31	23
2014-03-31	17
2014-06-30	15
2014-09-30	11
2014-12-31	8
2015-03-31	7
2015-06-30	5
2015-09-30	3
2015-12-31	6
2016-03-31	6
2016-06-30	3
2016-09-30	3
2016-12-31	4
2017-03-31	4
2017-06-30	8
2017-09-30	9
2017-12-31	12
2018-03-31	8
2018-06-30	11
2018-09-30	10
2018-12-31	13
2019-03-31	17
2019-06-30	13
2019-09-30	14
2019-12-31	15
2020-03-31	14
2020-06-30	15
2020-09-30	12
2020-12-31	10
2021-03-31	14
2021-06-30	10
2021-09-30	12
2021-12-31	12
2022-03-31	9
2022-06-30	10
2022-09-30	9
2022-12-31	10
2023-03-31	9
2023-06-30	5
2023-09-30	4