Quarter	US dollars
1999-09-30	7438
1999-12-31	8127
2000-03-31	128
2000-06-30	84
2000-09-30	122
2000-12-31	135
2001-03-31	96
2001-06-30	74
2001-09-30	94
2001-12-31	64
2002-03-31	84
2002-06-30	76
2002-09-30	71
2002-12-31	70
2003-03-31	79
2003-06-30	89
2003-09-30	80
2003-12-31	88
2004-03-31	84
2004-06-30	112
2004-09-30	117
2004-12-31	134
2005-03-31	110
2005-06-30	112
2005-09-30	54
2005-12-31	64
2006-03-31	57
2006-06-30	58
2006-09-30	57
2006-12-31	56
2007-03-31	54
2007-06-30	2
2007-09-30	5
2007-12-31	4
2008-03-31	5
2008-06-30	-2
2008-09-30	4
2008-12-31	6
2009-03-31	-1
2009-06-30	-1
2009-09-30	1
2009-12-31	5
2010-03-31	-4
2010-06-30	-4
2010-09-30	-2
2010-12-31	2
2011-03-31	1
2011-06-30	3
2011-09-30	-3
2011-12-31	-8
2012-03-31	-3
2012-06-30	4
2012-09-30	2
2012-12-31	0
2013-03-31	2
2013-06-30	-2
2013-09-30	-2
2013-12-31	-3
2014-03-31	-4
2014-06-30	1
2014-09-30	-2
2014-12-31	1
2015-03-31	-1
2015-06-30	1
2015-09-30	-3
2015-12-31	0
2016-03-31	-3
2016-06-30	-2
2016-09-30	-4
2016-12-31	-1
2017-03-31	-2
2017-06-30	-1
2017-09-30	0
2017-12-31	-1
2018-03-31	2
2018-06-30	3
2018-09-30	-1
2018-12-31	-1
2019-03-31	-3
2019-06-30	-6
2019-09-30	-10
2019-12-31	3
2020-03-31	-10
2020-06-30	-4
2020-09-30	2
2020-12-31	7
2021-03-31	1
2021-06-30	0
2021-09-30	2
2021-12-31	8
2022-03-31	0
2022-06-30	-16
2022-09-30	-7
2022-12-31	-4
2023-03-31	-27
2023-06-30	-7
2023-09-30	9
2023-12-31	15