Quarter	US dollars
2004-12-31	71
2005-03-31	38
2005-06-30	147
2005-09-30	129
2005-12-31	148
2006-03-31	201
2006-06-30	161
2006-09-30	166
2006-12-31	164
2007-03-31	304
2007-06-30	490
2007-09-30	346
2007-12-31	233
2008-03-31	76
2008-06-30	177
2008-09-30	178
2008-12-31	229
2009-03-31	171
2009-06-30	186
2009-09-30	181
2009-12-31	131
2010-03-31	133
2010-06-30	81
2010-09-30	106
2010-12-31	149
2011-03-31	99
2011-06-30	79
2011-09-30	64
2011-12-31	43
2012-03-31	54
2012-06-30	36
2012-09-30	58
2012-12-31	40
2013-03-31	76
2013-06-30	85
2013-09-30	115
2013-12-31	96
2014-03-31	103
2014-06-30	137
2014-09-30	99
2014-12-31	61
2015-03-31	59
2015-06-30	36
2015-09-30	24
2015-12-31	19
2016-03-31	20
2016-06-30	4
2016-09-30	8
2016-12-31	4
2017-03-31	94
2017-06-30	99
2017-09-30	115
2017-12-31	97
2018-03-31	116
2018-06-30	135
2018-09-30	201
2018-12-31	190
2019-03-31	259
2019-06-30	209
2019-09-30	243
2019-12-31	288
2020-03-31	216
2020-06-30	206
2020-09-30	231
2020-12-31	218
2021-03-31	236
2021-06-30	211
2021-09-30	252
2021-12-31	226
2022-03-31	111
2022-06-30	75
2022-09-30	54
2022-12-31	61
2023-03-31	67
2023-06-30	63
2023-09-30	69