Quarter	US dollars
2004-12-31	27
2005-03-31	23
2005-06-30	16
2005-09-30	18
2005-12-31	12
2006-03-31	23
2006-06-30	30
2006-09-30	32
2006-12-31	16
2007-03-31	14
2007-06-30	68
2007-09-30	24
2007-12-31	20
2008-03-31	107
2008-06-30	42
2008-09-30	110
2008-12-31	43
2009-03-31	40
2009-06-30	30
2009-09-30	99
2009-12-31	281
2010-03-31	243
2010-06-30	257
2010-09-30	564
2010-12-31	542
2011-03-31	274
2011-06-30	352
2011-09-30	344
2011-12-31	370
2012-03-31	283
2012-06-30	325
2012-09-30	229
2012-12-31	168
2013-03-31	199
2013-06-30	165
2013-09-30	283
2013-12-31	281
2014-03-31	355
2014-06-30	256
2014-09-30	250
2014-12-31	320
2015-03-31	181
2015-06-30	170
2015-09-30	259
2015-12-31	209
2016-03-31	134
2016-06-30	160
2016-09-30	142
2016-12-31	153
2017-03-31	281
2017-06-30	92
2017-09-30	47
2017-12-31	38
2018-03-31	58
2018-06-30	62
2018-09-30	68
2018-12-31	34
2019-03-31	44
2019-06-30	43
2019-09-30	39
2019-12-31	40
2020-03-31	278
2020-06-30	255
2020-09-30	72
2020-12-31	75
2021-03-31	22
2021-06-30	43
2021-09-30	74
2021-12-31	111
2022-03-31	190
2022-06-30	142
2022-09-30	112
2022-12-31	139
2023-03-31	77
2023-06-30	21
2023-09-30	21