Quarter	US dollars
1999-09-30	2
1999-12-31	2
2000-03-31	2
2000-06-30	2
2000-09-30	12
2000-12-31	1
2001-03-31	1
2001-06-30	4
2001-09-30	0
2001-12-31	4
2002-03-31	0
2002-06-30	2
2002-09-30	0
2002-12-31	3
2003-03-31	3
2003-06-30	2
2003-09-30	3
2003-12-31	36
2004-03-31	6
2004-06-30	27
2004-09-30	16
2004-12-31	13
2005-03-31	36
2005-06-30	25
2005-09-30	51
2005-12-31	39
2006-03-31	33
2006-06-30	43
2006-09-30	28
2006-12-31	0
2007-03-31	29
2007-06-30	50
2007-09-30	35
2007-12-31	34
2008-03-31	177
2008-06-30	189
2008-09-30	103
2008-12-31	62
2009-03-31	44
2009-06-30	26
2009-09-30	37
2009-12-31	24
2010-03-31	29
2010-06-30	31
2010-09-30	30
2010-12-31	56
2011-03-31	51
2011-06-30	45
2011-09-30	53
2011-12-31	51
2012-03-31	54
2012-06-30	22
2012-09-30	16
2012-12-31	36
2013-03-31	30
2013-06-30	29
2013-09-30	26
2013-12-31	13
2014-03-31	12
2014-06-30	10
2014-09-30	21
2014-12-31	16
2015-03-31	15
2015-06-30	17
2015-09-30	14
2015-12-31	18
2016-03-31	32
2016-06-30	27
2016-09-30	16
2016-12-31	14
2017-03-31	9
2017-06-30	17
2017-09-30	17
2017-12-31	5
2018-03-31	3
2018-06-30	5
2018-09-30	3
2018-12-31	4
2019-03-31	1
2019-06-30	15
2019-09-30	23
2019-12-31	15
2020-03-31	42
2020-06-30	44
2020-09-30	44
2020-12-31	61
2021-03-31	130
2021-06-30	35
2021-09-30	62
2021-12-31	49
2022-03-31	38
2022-06-30	89
2022-09-30	60
2022-12-31	3
2023-03-31	1
2023-06-30	0
2023-09-30	0