Quarter	US dollars
2004-12-31	13
2005-03-31	13
2005-06-30	32
2005-09-30	19
2005-12-31	31
2006-03-31	33
2006-06-30	13
2006-09-30	37
2006-12-31	31
2007-03-31	33
2007-06-30	20
2007-09-30	35
2007-12-31	34
2008-03-31	38
2008-06-30	40
2008-09-30	43
2008-12-31	40
2009-03-31	40
2009-06-30	40
2009-09-30	37
2009-12-31	37
2010-03-31	36
2010-06-30	36
2010-09-30	36
2010-12-31	36
2011-03-31	35
2011-06-30	34
2011-09-30	55
2011-12-31	42
2012-03-31	43
2012-06-30	42
2012-09-30	40
2012-12-31	42
2013-03-31	41
2013-06-30	39
2013-09-30	18
2013-12-31	15
2014-03-31	23
2014-06-30	24
2014-09-30	21
2014-12-31	20
2015-03-31	12
2015-06-30	9
2015-09-30	11
2015-12-31	10
2016-03-31	9
2016-06-30	8
2016-09-30	8
2016-12-31	10
2017-03-31	4
2017-06-30	9
2017-09-30	8
2017-12-31	4
2018-03-31	7
2018-06-30	7
2018-09-30	4
2018-12-31	4
2019-03-31	4
2019-06-30	5
2019-09-30	4
2019-12-31	4
2020-03-31	5
2020-06-30	5
2020-09-30	5
2020-12-31	5
2021-03-31	6
2021-06-30	4
2021-09-30	4
2021-12-31	4
2022-03-31	4
2022-06-30	1
2022-09-30	10
2022-12-31	9
2023-03-31	9
2023-06-30	8
2023-09-30	7