Quarter	US dollars
2004-12-31	50
2005-03-31	13
2005-06-30	20
2005-09-30	16
2005-12-31	21
2006-03-31	31
2006-06-30	35
2006-09-30	32
2006-12-31	33
2007-03-31	33
2007-06-30	32
2007-09-30	41
2007-12-31	155
2008-03-31	64
2008-06-30	32
2008-09-30	11
2008-12-31	1
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	2
2010-06-30	3
2010-09-30	6
2010-12-31	6
2011-03-31	8
2011-06-30	6
2011-09-30	6
2011-12-31	150
2012-03-31	24
2012-06-30	17
2012-09-30	10
2012-12-31	5
2013-03-31	14
2013-06-30	89
2013-09-30	66
2013-12-31	81
2014-03-31	57
2014-06-30	22
2014-09-30	21
2014-12-31	36
2015-03-31	91
2015-06-30	61
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