Quarter	US dollars
1999-09-30	0
1999-12-31	0
2000-03-31	0
2000-06-30	0
2000-09-30	0
2000-12-31	1
2001-03-31	14
2001-06-30	18
2001-09-30	24
2001-12-31	17
2002-03-31	20
2002-06-30	23
2002-09-30	24
2002-12-31	19
2003-03-31	21
2003-06-30	18
2003-09-30	17
2003-12-31	29
2004-03-31	42
2004-06-30	49
2004-09-30	81
2004-12-31	113
2005-03-31	146
2005-06-30	145
2005-09-30	164
2005-12-31	228
2006-03-31	264
2006-06-30	281
2006-09-30	235
2006-12-31	229
2007-03-31	233
2007-06-30	185
2007-09-30	214
2007-12-31	147
2008-03-31	239
2008-06-30	123
2008-09-30	64
2008-12-31	141
2009-03-31	129
2009-06-30	122
2009-09-30	158
2009-12-31	119
2010-03-31	102
2010-06-30	109
2010-09-30	123
2010-12-31	94
2011-03-31	22
2011-06-30	90
2011-09-30	101
2011-12-31	28
2012-03-31	77
2012-06-30	77
2012-09-30	69
2012-12-31	66
2013-03-31	73
2013-06-30	152
2013-09-30	141
2013-12-31	109
2014-03-31	95
2014-06-30	60
2014-09-30	55
2014-12-31	73
2015-03-31	50
2015-06-30	50
2015-09-30	62
2015-12-31	58
2016-03-31	78
2016-06-30	55
2016-09-30	42
2016-12-31	46
2017-03-31	45
2017-06-30	53
2017-09-30	17
2017-12-31	19
2018-03-31	36
2018-06-30	12
2018-09-30	37
2018-12-31	26
2019-03-31	12
2019-06-30	19
2019-09-30	12
2019-12-31	30
2020-03-31	52
2020-06-30	30
2020-09-30	22
2020-12-31	16
2021-03-31	40
2021-06-30	51
2021-09-30	71
2021-12-31	20
2022-03-31	64
2022-06-30	20
2022-09-30	25
2022-12-31	99
2023-03-31	8
2023-06-30	36
2023-09-30	28