Quarter	US dollars
2004-12-31	54
2005-03-31	34
2005-06-30	36
2005-09-30	35
2005-12-31	70
2006-03-31	199
2006-06-30	768
2006-09-30	953
2006-12-31	1454
2007-03-31	2505
2007-06-30	3467
2007-09-30	3999
2007-12-31	4673
2008-03-31	4355
2008-06-30	4824
2008-09-30	2889
2008-12-31	3032
2009-03-31	2938
2009-06-30	3234
2009-09-30	1894
2009-12-31	2454
2010-03-31	2788
2010-06-30	2747
2010-09-30	4008
2010-12-31	5587
2011-03-31	5913
2011-06-30	6238
2011-09-30	6861
2011-12-31	5809
2012-03-31	5175
2012-06-30	4325
2012-09-30	3889
2012-12-31	4302
2013-03-31	9755
2013-06-30	9264
2013-09-30	8665
2013-12-31	6438
2014-03-31	5996
2014-06-30	5729
2014-09-30	4984
2014-12-31	5226
2015-03-31	5196
2015-06-30	5003
2015-09-30	4700
2015-12-31	4824
2016-03-31	4726
2016-06-30	4405
2016-09-30	4196
2016-12-31	5198
2017-03-31	4375
2017-06-30	4152
2017-09-30	3323
2017-12-31	1148
2018-03-31	1
2018-06-30	1
2018-09-30	1
2018-12-31	1
2019-03-31	1
2019-06-30	1
2019-09-30	1
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0