Quarter	US dollars
2004-12-31	4
2005-03-31	9
2005-06-30	13
2005-09-30	7
2005-12-31	7
2006-03-31	9
2006-06-30	9
2006-09-30	6
2006-12-31	10
2007-03-31	2
2007-06-30	8
2007-09-30	8
2007-12-31	10
2008-03-31	10
2008-06-30	12
2008-09-30	29
2008-12-31	17
2009-03-31	20
2009-06-30	15
2009-09-30	34
2009-12-31	26
2010-03-31	15
2010-06-30	19
2010-09-30	22
2010-12-31	22
2011-03-31	24
2011-06-30	18
2011-09-30	26
2011-12-31	26
2012-03-31	26
2012-06-30	16
2012-09-30	15
2012-12-31	32
2013-03-31	36
2013-06-30	38
2013-09-30	36
2013-12-31	40
2014-03-31	37
2014-06-30	50
2014-09-30	50
2014-12-31	56
2015-03-31	39
2015-06-30	36
2015-09-30	68
2015-12-31	62
2016-03-31	59
2016-06-30	67
2016-09-30	66
2016-12-31	64
2017-03-31	48
2017-06-30	6
2017-09-30	3
2017-12-31	3
2018-03-31	3
2018-06-30	1
2018-09-30	18
2018-12-31	11
2019-03-31	10
2019-06-30	8
2019-09-30	6
2019-12-31	9
2020-03-31	5
2020-06-30	5
2020-09-30	5
2020-12-31	4
2021-03-31	4
2021-06-30	4
2021-09-30	4
2021-12-31	12
2022-03-31	8
2022-06-30	4
2022-09-30	4
2022-12-31	6
2023-03-31	3
2023-06-30	2
2023-09-30	0