Quarter	US dollars
2004-12-31	4
2005-03-31	4
2005-06-30	4
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	0
2007-09-30	0
2007-12-31	0
2008-03-31	0
2008-06-30	0
2008-09-30	12
2008-12-31	14
2009-03-31	6
2009-06-30	15
2009-09-30	8
2009-12-31	16
2010-03-31	9
2010-06-30	18
2010-09-30	11
2010-12-31	19
2011-03-31	11
2011-06-30	18
2011-09-30	17
2011-12-31	23
2012-03-31	14
2012-06-30	25
2012-09-30	2
2012-12-31	2
2013-03-31	2
2013-06-30	3
2013-09-30	2
2013-12-31	2
2014-03-31	0
2014-06-30	0
2014-09-30	0
2014-12-31	0
2015-03-31	0
2015-06-30	0
2015-09-30	0
2015-12-31	0
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	561
2017-09-30	531
2017-12-31	513
2018-03-31	417
2018-06-30	434
2018-09-30	522
2018-12-31	366
2019-03-31	318
2019-06-30	299
2019-09-30	257
2019-12-31	244
2020-03-31	172
2020-06-30	125
2020-09-30	125
2020-12-31	97
2021-03-31	70
2021-06-30	62
2021-09-30	47
2021-12-31	36
2022-03-31	29
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0