Quarter	US dollars
2004-12-31	8
2005-03-31	21
2005-06-30	11
2005-09-30	50
2005-12-31	3
2006-03-31	7
2006-06-30	9
2006-09-30	6
2006-12-31	6
2007-03-31	6
2007-06-30	8
2007-09-30	8
2007-12-31	14
2008-03-31	16
2008-06-30	70
2008-09-30	21
2008-12-31	12
2009-03-31	4
2009-06-30	7
2009-09-30	5
2009-12-31	5
2010-03-31	6
2010-06-30	4
2010-09-30	6
2010-12-31	2
2011-03-31	5
2011-06-30	6
2011-09-30	2
2011-12-31	189
2012-03-31	181
2012-06-30	3
2012-09-30	2
2012-12-31	123
2013-03-31	123
2013-06-30	159
2013-09-30	199
2013-12-31	197
2014-03-31	198
2014-06-30	195
2014-09-30	188
2014-12-31	183
2015-03-31	180
2015-06-30	77
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