Quarter	US dollars
2004-12-31	65
2005-03-31	85
2005-06-30	68
2005-09-30	88
2005-12-31	38
2006-03-31	135
2006-06-30	39
2006-09-30	90
2006-12-31	114
2007-03-31	145
2007-06-30	148
2007-09-30	149
2007-12-31	173
2008-03-31	215
2008-06-30	211
2008-09-30	200
2008-12-31	158
2009-03-31	129
2009-06-30	84
2009-09-30	62
2009-12-31	69
2010-03-31	93
2010-06-30	82
2010-09-30	82
2010-12-31	147
2011-03-31	127
2011-06-30	199
2011-09-30	245
2011-12-31	334
2012-03-31	499
2012-06-30	154
2012-09-30	92
2012-12-31	255
2013-03-31	247
2013-06-30	300
2013-09-30	335
2013-12-31	420
2014-03-31	340
2014-06-30	332
2014-09-30	352
2014-12-31	317
2015-03-31	306
2015-06-30	282
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