Quarter	US dollars
2004-12-31	15
2005-03-31	21
2005-06-30	14
2005-09-30	48
2005-12-31	67
2006-03-31	99
2006-06-30	52
2006-09-30	75
2006-12-31	47
2007-03-31	75
2007-06-30	114
2007-09-30	112
2007-12-31	111
2008-03-31	50
2008-06-30	54
2008-09-30	66
2008-12-31	53
2009-03-31	46
2009-06-30	20
2009-09-30	34
2009-12-31	31
2010-03-31	35
2010-06-30	42
2010-09-30	32
2010-12-31	34
2011-03-31	48
2011-06-30	27
2011-09-30	51
2011-12-31	71
2012-03-31	85
2012-06-30	96
2012-09-30	50
2012-12-31	24
2013-03-31	169
2013-06-30	177
2013-09-30	181
2013-12-31	200
2014-03-31	212
2014-06-30	202
2014-09-30	282
2014-12-31	225
2015-03-31	193
2015-06-30	206
2015-09-30	209
2015-12-31	185
2016-03-31	145
2016-06-30	146
2016-09-30	174
2016-12-31	139
2017-03-31	148
2017-06-30	129
2017-09-30	127
2017-12-31	141
2018-03-31	142
2018-06-30	140
2018-09-30	146
2018-12-31	169
2019-03-31	164
2019-06-30	174
2019-09-30	170
2019-12-31	174
2020-03-31	167
2020-06-30	167
2020-09-30	169
2020-12-31	176
2021-03-31	179
2021-06-30	173
2021-09-30	169
2021-12-31	156
2022-03-31	158
2022-06-30	151
2022-09-30	131
2022-12-31	145
2023-03-31	133
2023-06-30	143
2023-09-30	146