Quarter	US dollars
2004-12-31	21
2005-03-31	23
2005-06-30	16
2005-09-30	16
2005-12-31	17
2006-03-31	161
2006-06-30	155
2006-09-30	11
2006-12-31	18
2007-03-31	14
2007-06-30	62
2007-09-30	59
2007-12-31	30
2008-03-31	22
2008-06-30	24
2008-09-30	12
2008-12-31	7
2009-03-31	7
2009-06-30	12
2009-09-30	13
2009-12-31	11
2010-03-31	11
2010-06-30	22
2010-09-30	20
2010-12-31	34
2011-03-31	79
2011-06-30	26
2011-09-30	28
2011-12-31	37
2012-03-31	29
2012-06-30	36
2012-09-30	23
2012-12-31	19
2013-03-31	61
2013-06-30	71
2013-09-30	70
2013-12-31	35
2014-03-31	48
2014-06-30	39
2014-09-30	50
2014-12-31	91
2015-03-31	102
2015-06-30	96
2015-09-30	101
2015-12-31	67
2016-03-31	65
2016-06-30	62
2016-09-30	61
2016-12-31	43
2017-03-31	64
2017-06-30	42
2017-09-30	39
2017-12-31	36
2018-03-31	18
2018-06-30	16
2018-09-30	33
2018-12-31	10
2019-03-31	35
2019-06-30	36
2019-09-30	18
2019-12-31	22
2020-03-31	14
2020-06-30	15
2020-09-30	13
2020-12-31	57
2021-03-31	10
2021-06-30	17
2021-09-30	7
2021-12-31	7
2022-03-31	1
2022-06-30	2
2022-09-30	4
2022-12-31	1
2023-03-31	2
2023-06-30	1
2023-09-30	3