Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	2
2005-09-30	2
2005-12-31	2
2006-03-31	2
2006-06-30	15
2006-09-30	21
2006-12-31	20
2007-03-31	80
2007-06-30	74
2007-09-30	65
2007-12-31	52
2008-03-31	50
2008-06-30	48
2008-09-30	48
2008-12-31	45
2009-03-31	43
2009-06-30	38
2009-09-30	42
2009-12-31	37
2010-03-31	535
2010-06-30	479
2010-09-30	1514
2010-12-31	186
2011-03-31	401
2011-06-30	745
2011-09-30	485
2011-12-31	453
2012-03-31	257
2012-06-30	196
2012-09-30	124
2012-12-31	78
2013-03-31	111
2013-06-30	61
2013-09-30	81
2013-12-31	83
2014-03-31	80
2014-06-30	68
2014-09-30	66
2014-12-31	61
2015-03-31	42
2015-06-30	52
2015-09-30	59
2015-12-31	234
2016-03-31	68
2016-06-30	73
2016-09-30	81
2016-12-31	92
2017-03-31	106
2017-06-30	233
2017-09-30	225
2017-12-31	139
2018-03-31	156
2018-06-30	147
2018-09-30	158
2018-12-31	146
2019-03-31	151
2019-06-30	150
2019-09-30	140
2019-12-31	136
2020-03-31	128
2020-06-30	122
2020-09-30	121
2020-12-31	121
2021-03-31	116
2021-06-30	109
2021-09-30	101
2021-12-31	98
2022-03-31	92
2022-06-30	83
2022-09-30	75
2022-12-31	81
2023-03-31	80
2023-06-30	59
2023-09-30	55