Quarter	US dollars
2004-12-31	23
2005-03-31	8
2005-06-30	7
2005-09-30	7
2005-12-31	14
2006-03-31	12
2006-06-30	24
2006-09-30	21
2006-12-31	23
2007-03-31	37
2007-06-30	24
2007-09-30	22
2007-12-31	22
2008-03-31	28
2008-06-30	54
2008-09-30	50
2008-12-31	43
2009-03-31	17
2009-06-30	124
2009-09-30	19
2009-12-31	31
2010-03-31	27
2010-06-30	51
2010-09-30	54
2010-12-31	77
2011-03-31	27
2011-06-30	26
2011-09-30	171
2011-12-31	23
2012-03-31	29
2012-06-30	11
2012-09-30	11
2012-12-31	13
2013-03-31	44
2013-06-30	100
2013-09-30	57
2013-12-31	56
2014-03-31	57
2014-06-30	56
2014-09-30	55
2014-12-31	5
2015-03-31	18
2015-06-30	22
2015-09-30	21
2015-12-31	22
2016-03-31	23
2016-06-30	17
2016-09-30	18
2016-12-31	21
2017-03-31	20
2017-06-30	14
2017-09-30	19
2017-12-31	26
2018-03-31	11
2018-06-30	16
2018-09-30	16
2018-12-31	15
2019-03-31	16
2019-06-30	19
2019-09-30	37
2019-12-31	18
2020-03-31	17
2020-06-30	20
2020-09-30	13
2020-12-31	12
2021-03-31	12
2021-06-30	11
2021-09-30	11
2021-12-31	11
2022-03-31	11
2022-06-30	24
2022-09-30	17
2022-12-31	17
2023-03-31	17
2023-06-30	18
2023-09-30	17