Quarter	US dollars
2004-12-31	33
2005-03-31	4
2005-06-30	2
2005-09-30	4
2005-12-31	3
2006-03-31	9
2006-06-30	7
2006-09-30	7
2006-12-31	12
2007-03-31	18
2007-06-30	18
2007-09-30	20
2007-12-31	34
2008-03-31	78
2008-06-30	133
2008-09-30	146
2008-12-31	132
2009-03-31	83
2009-06-30	100
2009-09-30	102
2009-12-31	113
2010-03-31	97
2010-06-30	81
2010-09-30	98
2010-12-31	147
2011-03-31	141
2011-06-30	265
2011-09-30	259
2011-12-31	379
2012-03-31	356
2012-06-30	344
2012-09-30	134
2012-12-31	249
2013-03-31	284
2013-06-30	306
2013-09-30	236
2013-12-31	154
2014-03-31	152
2014-06-30	150
2014-09-30	148
2014-12-31	201
2015-03-31	123
2015-06-30	175
2015-09-30	154
2015-12-31	156
2016-03-31	157
2016-06-30	157
2016-09-30	118
2016-12-31	155
2017-03-31	236
2017-06-30	331
2017-09-30	368
2017-12-31	269
2018-03-31	215
2018-06-30	209
2018-09-30	227
2018-12-31	235
2019-03-31	229
2019-06-30	244
2019-09-30	216
2019-12-31	185
2020-03-31	171
2020-06-30	172
2020-09-30	158
2020-12-31	192
2021-03-31	221
2021-06-30	258
2021-09-30	200
2021-12-31	244
2022-03-31	236
2022-06-30	260
2022-09-30	266
2022-12-31	263
2023-03-31	207
2023-06-30	194
2023-09-30	212