Quarter	US dollars
2004-12-31	8
2005-03-31	11
2005-06-30	7
2005-09-30	39
2005-12-31	7
2006-03-31	2
2006-06-30	6
2006-09-30	6
2006-12-31	4
2007-03-31	14
2007-06-30	18
2007-09-30	14
2007-12-31	22
2008-03-31	30
2008-06-30	24
2008-09-30	23
2008-12-31	10
2009-03-31	100
2009-06-30	10
2009-09-30	8
2009-12-31	47
2010-03-31	33
2010-06-30	24
2010-09-30	27
2010-12-31	34
2011-03-31	35
2011-06-30	21
2011-09-30	14
2011-12-31	15
2012-03-31	225
2012-06-30	229
2012-09-30	244
2012-12-31	230
2013-03-31	250
2013-06-30	220
2013-09-30	134
2013-12-31	131
2014-03-31	115
2014-06-30	109
2014-09-30	86
2014-12-31	69
2015-03-31	62
2015-06-30	60
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