Quarter	US dollars
2004-12-31	2
2005-03-31	28
2005-06-30	22
2005-09-30	7
2005-12-31	1626
2006-03-31	1483
2006-06-30	31
2006-09-30	1668
2006-12-31	5988
2007-03-31	4421
2007-06-30	4410
2007-09-30	4651
2007-12-31	4551
2008-03-31	4685
2008-06-30	4647
2008-09-30	4758
2008-12-31	3
2009-03-31	9107
2009-06-30	4581
2009-09-30	11
2009-12-31	9200
2010-03-31	4433
2010-06-30	19
2010-09-30	4686
2010-12-31	4679
2011-03-31	4615
2011-06-30	4857
2011-09-30	5365
2011-12-31	5530
2012-03-31	5760
2012-06-30	5396
2012-09-30	5462
2012-12-31	8126
2013-03-31	9014
2013-06-30	9696
2013-09-30	16704
2013-12-31	10907
2014-03-31	75
2014-06-30	67
2014-09-30	52
2014-12-31	75
2015-03-31	18
2015-06-30	94
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	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0