Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
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	4
2007-12-31	4
2008-03-31	2
2008-06-30	2
2008-09-30	2
2008-12-31	1
2009-03-31	1
2009-06-30	2
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	2
2010-12-31	1083
2011-03-31	1016
2011-06-30	1068
2011-09-30	1087
2011-12-31	1062
2012-03-31	6159
2012-06-30	5321
2012-09-30	4830
2012-12-31	5626
2013-03-31	6939
2013-06-30	6629
2013-09-30	5488
2013-12-31	3474
2014-03-31	3436
2014-06-30	3266
2014-09-30	3477
2014-12-31	4167
2015-03-31	3419
2015-06-30	3615
2015-09-30	3496
2015-12-31	991
2016-03-31	3090
2016-06-30	3015
2016-09-30	3496
2016-12-31	3513
2017-03-31	3897
2017-06-30	1707
2017-09-30	2165
2017-12-31	3618
2018-03-31	6
2018-06-30	7
2018-09-30	876
2018-12-31	6
2019-03-31	10
2019-06-30	45
2019-09-30	90
2019-12-31	358
2020-03-31	454
2020-06-30	475
2020-09-30	527
2020-12-31	444
2021-03-31	472
2021-06-30	467
2021-09-30	421
2021-12-31	504
2022-03-31	549
2022-06-30	474
2022-09-30	101
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0