Quarter	US dollars
1999-09-30	3
1999-12-31	5
2000-03-31	3
2000-06-30	3
2000-09-30	0
2000-12-31	3
2001-03-31	4
2001-06-30	3
2001-09-30	9
2001-12-31	6
2002-03-31	6
2002-06-30	14
2002-09-30	22
2002-12-31	47
2003-03-31	52
2003-06-30	74
2003-09-30	63
2003-12-31	68
2004-03-31	81
2004-06-30	60
2004-09-30	69
2004-12-31	54
2005-03-31	47
2005-06-30	61
2005-09-30	57
2005-12-31	105
2006-03-31	56
2006-06-30	54
2006-09-30	75
2006-12-31	65
2007-03-31	71
2007-06-30	112
2007-09-30	177
2007-12-31	255
2008-03-31	80
2008-06-30	398
2008-09-30	438
2008-12-31	673
2009-03-31	555
2009-06-30	181
2009-09-30	249
2009-12-31	194
2010-03-31	179
2010-06-30	248
2010-09-30	251
2010-12-31	222
2011-03-31	147
2011-06-30	154
2011-09-30	164
2011-12-31	152
2012-03-31	161
2012-06-30	119
2012-09-30	71
2012-12-31	63
2013-03-31	87
2013-06-30	49
2013-09-30	29
2013-12-31	13
2014-03-31	18
2014-06-30	14
2014-09-30	11
2014-12-31	12
2015-03-31	10
2015-06-30	6
2015-09-30	5
2015-12-31	6
2016-03-31	13
2016-06-30	24
2016-09-30	13
2016-12-31	1
2017-03-31	0
2017-06-30	1
2017-09-30	3
2017-12-31	1
2018-03-31	3
2018-06-30	3
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	1
2019-09-30	0
2019-12-31	0
2020-03-31	1
2020-06-30	0
2020-09-30	1
2020-12-31	1
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0