Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	2
2005-12-31	2
2006-03-31	2
2006-06-30	2
2006-09-30	2
2006-12-31	2
2007-03-31	2
2007-06-30	2
2007-09-30	2
2007-12-31	2
2008-03-31	2
2008-06-30	2
2008-09-30	4
2008-12-31	6
2009-03-31	7
2009-06-30	8
2009-09-30	8
2009-12-31	8
2010-03-31	11
2010-06-30	12
2010-09-30	14
2010-12-31	14
2011-03-31	16
2011-06-30	13
2011-09-30	12
2011-12-31	12
2012-03-31	56
2012-06-30	56
2012-09-30	58
2012-12-31	57
2013-03-31	55
2013-06-30	55
2013-09-30	40
2013-12-31	33
2014-03-31	28
2014-06-30	31
2014-09-30	10
2014-12-31	9
2015-03-31	10
2015-06-30	11
2015-09-30	11
2015-12-31	9
2016-03-31	10
2016-06-30	13
2016-09-30	8
2016-12-31	7
2017-03-31	9
2017-06-30	8
2017-09-30	7
2017-12-31	4
2018-03-31	4
2018-06-30	5
2018-09-30	8
2018-12-31	9
2019-03-31	5
2019-06-30	8
2019-09-30	7
2019-12-31	12
2020-03-31	14
2020-06-30	16
2020-09-30	16
2020-12-31	14
2021-03-31	15
2021-06-30	18
2021-09-30	46
2021-12-31	40
2022-03-31	37
2022-06-30	43
2022-09-30	34
2022-12-31	45
2023-03-31	51
2023-06-30	47
2023-09-30	49