Quarter	US dollars
2004-12-31	15
2005-03-31	13
2005-06-30	9
2005-09-30	7
2005-12-31	7
2006-03-31	7
2006-06-30	18
2006-09-30	15
2006-12-31	738
2007-03-31	741
2007-06-30	754
2007-09-30	809
2007-12-31	832
2008-03-31	857
2008-06-30	866
2008-09-30	850
2008-12-31	822
2009-03-31	782
2009-06-30	744
2009-09-30	705
2009-12-31	664
2010-03-31	640
2010-06-30	607
2010-09-30	592
2010-12-31	582
2011-03-31	575
2011-06-30	556
2011-09-30	575
2011-12-31	608
2012-03-31	609
2012-06-30	653
2012-09-30	544
2012-12-31	21
2013-03-31	21
2013-06-30	17
2013-09-30	19
2013-12-31	21
2014-03-31	22
2014-06-30	26
2014-09-30	28
2014-12-31	30
2015-03-31	24
2015-06-30	25
2015-09-30	29
2015-12-31	33
2016-03-31	30
2016-06-30	31
2016-09-30	29
2016-12-31	28
2017-03-31	26
2017-06-30	26
2017-09-30	44
2017-12-31	20
2018-03-31	11
2018-06-30	11
2018-09-30	1
2018-12-31	1
2019-03-31	1
2019-06-30	1
2019-09-30	1
2019-12-31	1
2020-03-31	1
2020-06-30	1
2020-09-30	1
2020-12-31	3
2021-03-31	3
2021-06-30	3
2021-09-30	1
2021-12-31	1
2022-03-31	1
2022-06-30	1
2022-09-30	1
2022-12-31	0
2023-03-31	1
2023-06-30	1
2023-09-30	1