Quarter	US dollars
1999-03-31	14
1999-06-30	26
1999-09-30	39
1999-12-31	71
2000-03-31	145
2000-06-30	100
2000-09-30	118
2000-12-31	86
2001-03-31	41
2001-06-30	57
2001-09-30	80
2001-12-31	127
2002-03-31	71
2002-06-30	87
2002-09-30	97
2002-12-31	62
2003-03-31	147
2003-06-30	64
2003-09-30	62
2003-12-31	101
2004-03-31	77
2004-06-30	22
2004-09-30	204
2004-12-31	193
2005-03-31	180
2005-06-30	259
2005-09-30	403
2005-12-31	297
2006-03-31	333
2006-06-30	201
2006-09-30	368
2006-12-31	409
2007-03-31	469
2007-06-30	502
2007-09-30	565
2007-12-31	686
2008-03-31	767
2008-06-30	654
2008-09-30	724
2008-12-31	17
2009-03-31	90
2009-06-30	18
2009-09-30	43
2009-12-31	15
2010-03-31	141
2010-06-30	137
2010-09-30	203
2010-12-31	221
2011-03-31	118
2011-06-30	247
2011-09-30	46
2011-12-31	15
2012-03-31	105
2012-06-30	10
2012-09-30	7
2012-12-31	11
2013-03-31	109
2013-06-30	38
2013-09-30	11
2013-12-31	15
2014-03-31	101
2014-06-30	292
2014-09-30	242
2014-12-31	285
2015-03-31	202
2015-06-30	141
2015-09-30	27
2015-12-31	29
2016-03-31	133
2016-06-30	102
2016-09-30	12
2016-12-31	5
2017-03-31	105
2017-06-30	24
2017-09-30	112
2017-12-31	99
2018-03-31	317
2018-06-30	359
2018-09-30	296
2018-12-31	399
2019-03-31	419
2019-06-30	69
2019-09-30	215
2019-12-31	175
2020-03-31	230
2020-06-30	118
2020-09-30	48
2020-12-31	257
2021-03-31	546
2021-06-30	49
2021-09-30	35
2021-12-31	482
2022-03-31	102
2022-06-30	201
2022-09-30	127
2022-12-31	137
2023-03-31	103
2023-06-30	360
2023-09-30	153