Quarter	US dollars
2004-12-31	23
2005-03-31	19
2005-06-30	18
2005-09-30	23
2005-12-31	24
2006-03-31	19
2006-06-30	22
2006-09-30	32
2006-12-31	25
2007-03-31	24
2007-06-30	40
2007-09-30	59
2007-12-31	36
2008-03-31	36
2008-06-30	40
2008-09-30	43
2008-12-31	30
2009-03-31	27
2009-06-30	26
2009-09-30	45
2009-12-31	45
2010-03-31	23
2010-06-30	22
2010-09-30	19
2010-12-31	14
2011-03-31	14
2011-06-30	14
2011-09-30	16
2011-12-31	12
2012-03-31	21
2012-06-30	60
2012-09-30	36
2012-12-31	26
2013-03-31	109
2013-06-30	83
2013-09-30	92
2013-12-31	56
2014-03-31	87
2014-06-30	80
2014-09-30	70
2014-12-31	95
2015-03-31	61
2015-06-30	90
2015-09-30	65
2015-12-31	50
2016-03-31	36
2016-06-30	73
2016-09-30	55
2016-12-31	34
2017-03-31	33
2017-06-30	34
2017-09-30	35
2017-12-31	34
2018-03-31	35
2018-06-30	33
2018-09-30	53
2018-12-31	46
2019-03-31	47
2019-06-30	43
2019-09-30	37
2019-12-31	40
2020-03-31	41
2020-06-30	30
2020-09-30	17
2020-12-31	18
2021-03-31	23
2021-06-30	32
2021-09-30	27
2021-12-31	34
2022-03-31	25
2022-06-30	29
2022-09-30	19
2022-12-31	19
2023-03-31	20
2023-06-30	20
2023-09-30	18