Quarter	US dollars
2004-12-31	2
2005-03-31	66
2005-06-30	82
2005-09-30	11
2005-12-31	6
2006-03-31	12
2006-06-30	11
2006-09-30	11
2006-12-31	10
2007-03-31	67
2007-06-30	2
2007-09-30	0
2007-12-31	2
2008-03-31	0
2008-06-30	370
2008-09-30	529
2008-12-31	65
2009-03-31	37
2009-06-30	12
2009-09-30	62
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	26966
2010-12-31	138346
2011-03-31	142502
2011-06-30	149100
2011-09-30	167213
2011-12-31	172588
2012-03-31	116305
2012-06-30	104641
2012-09-30	96421
2012-12-31	133119
2013-03-31	382733
2013-06-30	365240
2013-09-30	289840
2013-12-31	247294
2014-03-31	226408
2014-06-30	251451
2014-09-30	238141
2014-12-31	197963
2015-03-31	200884
2015-06-30	181813
2015-09-30	181511
2015-12-31	138575
2016-03-31	146802
2016-06-30	117860
2016-09-30	115564
2016-12-31	98346
2017-03-31	97577
2017-06-30	97077
2017-09-30	114222
2017-12-31	78089
2018-03-31	160132
2018-06-30	125739
2018-09-30	137635
2018-12-31	125937
2019-03-31	138244
2019-06-30	169013
2019-09-30	192194