Quarter	US dollars
2004-12-31	290
2005-03-31	238
2005-06-30	131
2005-09-30	106
2005-12-31	132
2006-03-31	158
2006-06-30	135
2006-09-30	149
2006-12-31	133
2007-03-31	139
2007-06-30	130
2007-09-30	124
2007-12-31	243
2008-03-31	260
2008-06-30	159
2008-09-30	144
2008-12-31	145
2009-03-31	172
2009-06-30	165
2009-09-30	238
2009-12-31	213
2010-03-31	176
2010-06-30	192
2010-09-30	208
2010-12-31	218
2011-03-31	199
2011-06-30	209
2011-09-30	204
2011-12-31	184
2012-03-31	200
2012-06-30	195
2012-09-30	262
2012-12-31	278
2013-03-31	169
2013-06-30	156
2013-09-30	136
2013-12-31	144
2014-03-31	95
2014-06-30	113
2014-09-30	136
2014-12-31	44
2015-03-31	62
2015-06-30	151
2015-09-30	111
2015-12-31	162
2016-03-31	190
2016-06-30	184
2016-09-30	213
2016-12-31	164
2017-03-31	325
2017-06-30	58
2017-09-30	122
2017-12-31	43
2018-03-31	74
2018-06-30	30
2018-09-30	18
2018-12-31	17
2019-03-31	76
2019-06-30	34
2019-09-30	27
2019-12-31	20
2020-03-31	14
2020-06-30	42
2020-09-30	36
2020-12-31	44
2021-03-31	66
2021-06-30	72
2021-09-30	101
2021-12-31	116
2022-03-31	107
2022-06-30	103
2022-09-30	35
2022-12-31	13
2023-03-31	7
2023-06-30	4
2023-09-30	4