Quarter	US dollars
1999-09-30	7
1999-12-31	3
2000-03-31	2
2000-06-30	0
2000-09-30	1
2000-12-31	0
2001-03-31	0
2001-06-30	0
2001-09-30	46
2001-12-31	0
2002-03-31	0
2002-06-30	5
2002-09-30	0
2002-12-31	2
2003-03-31	0
2003-06-30	3
2003-09-30	10
2003-12-31	11
2004-03-31	6
2004-06-30	4
2004-09-30	2
2004-12-31	6
2005-03-31	8
2005-06-30	4
2005-09-30	9
2005-12-31	7
2006-03-31	7
2006-06-30	9
2006-09-30	11
2006-12-31	10
2007-03-31	22
2007-06-30	14
2007-09-30	8
2007-12-31	16
2008-03-31	16
2008-06-30	14
2008-09-30	11
2008-12-31	14
2009-03-31	16
2009-06-30	16
2009-09-30	11
2009-12-31	10
2010-03-31	12
2010-06-30	15
2010-09-30	13
2010-12-31	14
2011-03-31	14
2011-06-30	18
2011-09-30	20
2011-12-31	11
2012-03-31	10
2012-06-30	16
2012-09-30	19
2012-12-31	24
2013-03-31	29
2013-06-30	39
2013-09-30	39
2013-12-31	31
2014-03-31	27
2014-06-30	24
2014-09-30	21
2014-12-31	23
2015-03-31	19
2015-06-30	17
2015-09-30	32
2015-12-31	22
2016-03-31	20
2016-06-30	16
2016-09-30	12
2016-12-31	59
2017-03-31	11
2017-06-30	8
2017-09-30	8
2017-12-31	9
2018-03-31	29
2018-06-30	11
2018-09-30	7
2018-12-31	4
2019-03-31	12
2019-06-30	29
2019-09-30	55
2019-12-31	71
2020-03-31	84
2020-06-30	25
2020-09-30	101
2020-12-31	194
2021-03-31	148
2021-06-30	66
2021-09-30	27
2021-12-31	49
2022-03-31	87
2022-06-30	11
2022-09-30	8
2022-12-31	22
2023-03-31	33
2023-06-30	85
2023-09-30	40