Quarter	US dollars
1999-09-30	7
1999-12-31	8
2000-03-31	6
2000-06-30	3
2000-09-30	6
2000-12-31	18
2001-03-31	7
2001-06-30	3
2001-09-30	10
2001-12-31	6
2002-03-31	4
2002-06-30	5
2002-09-30	17
2002-12-31	16
2003-03-31	14
2003-06-30	15
2003-09-30	23
2003-12-31	32
2004-03-31	33
2004-06-30	25
2004-09-30	42
2004-12-31	77
2005-03-31	110
2005-06-30	81
2005-09-30	101
2005-12-31	72
2006-03-31	177
2006-06-30	50
2006-09-30	118
2006-12-31	141
2007-03-31	129
2007-06-30	120
2007-09-30	141
2007-12-31	149
2008-03-31	195
2008-06-30	163
2008-09-30	157
2008-12-31	128
2009-03-31	92
2009-06-30	41
2009-09-30	42
2009-12-31	42
2010-03-31	68
2010-06-30	55
2010-09-30	68
2010-12-31	132
2011-03-31	99
2011-06-30	183
2011-09-30	210
2011-12-31	504
2012-03-31	646
2012-06-30	188
2012-09-30	66
2012-12-31	223
2013-03-31	229
2013-06-30	268
2013-09-30	304
2013-12-31	385
2014-03-31	305
2014-06-30	313
2014-09-30	310
2014-12-31	279
2015-03-31	285
2015-06-30	182
2015-09-30	0
2015-12-31	0
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	0
2020-06-30	0
2020-09-30	0
2020-12-31	0
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