Quarter	US dollars
2004-12-31	6
2005-03-31	8
2005-06-30	18
2005-09-30	9
2005-12-31	17
2006-03-31	21
2006-06-30	22
2006-09-30	26
2006-12-31	27
2007-03-31	31
2007-06-30	32
2007-09-30	41
2007-12-31	48
2008-03-31	60
2008-06-30	52
2008-09-30	59
2008-12-31	65
2009-03-31	64
2009-06-30	96
2009-09-30	62
2009-12-31	68
2010-03-31	76
2010-06-30	75
2010-09-30	80
2010-12-31	86
2011-03-31	101
2011-06-30	161
2011-09-30	162
2011-12-31	113
2012-03-31	121
2012-06-30	135
2012-09-30	149
2012-12-31	142
2013-03-31	140
2013-06-30	146
2013-09-30	138
2013-12-31	137
2014-03-31	145
2014-06-30	162
2014-09-30	193
2014-12-31	155
2015-03-31	159
2015-06-30	165
2015-09-30	177
2015-12-31	234
2016-03-31	244
2016-06-30	231
2016-09-30	281
2016-12-31	281
2017-03-31	298
2017-06-30	255
2017-09-30	272
2017-12-31	266
2018-03-31	123
2018-06-30	111
2018-09-30	123
2018-12-31	89
2019-03-31	100
2019-06-30	90
2019-09-30	100
2019-12-31	99
2020-03-31	124
2020-06-30	146
2020-09-30	145
2020-12-31	147
2021-03-31	156
2021-06-30	140
2021-09-30	152
2021-12-31	151
2022-03-31	116
2022-06-30	210
2022-09-30	151
2022-12-31	141
2023-03-31	156
2023-06-30	144
2023-09-30	133