Quarter	US dollars
1999-09-30	2
1999-12-31	3
2000-03-31	10
2000-06-30	5
2000-09-30	9
2000-12-31	9
2001-03-31	17
2001-06-30	10
2001-09-30	9
2001-12-31	10
2002-03-31	11
2002-06-30	23
2002-09-30	17
2002-12-31	14
2003-03-31	17
2003-06-30	23
2003-09-30	48
2003-12-31	54
2004-03-31	48
2004-06-30	22
2004-09-30	22
2004-12-31	8
2005-03-31	9
2005-06-30	13
2005-09-30	11
2005-12-31	84
2006-03-31	19
2006-06-30	24
2006-09-30	21
2006-12-31	22
2007-03-31	27
2007-06-30	62
2007-09-30	67
2007-12-31	108
2008-03-31	147
2008-06-30	64
2008-09-30	68
2008-12-31	112
2009-03-31	67
2009-06-30	58
2009-09-30	90
2009-12-31	53
2010-03-31	52
2010-06-30	118
2010-09-30	76
2010-12-31	119
2011-03-31	107
2011-06-30	83
2011-09-30	97
2011-12-31	68
2012-03-31	97
2012-06-30	71
2012-09-30	74
2012-12-31	53
2013-03-31	56
2013-06-30	59
2013-09-30	52
2013-12-31	48
2014-03-31	155
2014-06-30	149
2014-09-30	149
2014-12-31	62
2015-03-31	62
2015-06-30	46
2015-09-30	53
2015-12-31	36
2016-03-31	46
2016-06-30	32
2016-09-30	25
2016-12-31	26
2017-03-31	25
2017-06-30	17
2017-09-30	13
2017-12-31	12
2018-03-31	10
2018-06-30	11
2018-09-30	10
2018-12-31	15
2019-03-31	17
2019-06-30	18
2019-09-30	12
2019-12-31	7
2020-03-31	19
2020-06-30	9
2020-09-30	12
2020-12-31	7
2021-03-31	4
2021-06-30	6
2021-09-30	4
2021-12-31	4
2022-03-31	3
2022-06-30	3
2022-09-30	2
2022-12-31	3
2023-03-31	1
2023-06-30	1
2023-09-30	0