Quarter	US dollars
1999-09-30	0
1999-12-31	0
2000-03-31	0
2000-06-30	0
2000-09-30	0
2000-12-31	4
2001-03-31	1
2001-06-30	82
2001-09-30	71
2001-12-31	84
2002-03-31	85
2002-06-30	84
2002-09-30	83
2002-12-31	8
2003-03-31	13
2003-06-30	17
2003-09-30	23
2003-12-31	25
2004-03-31	22
2004-06-30	16
2004-09-30	18
2004-12-31	19
2005-03-31	17
2005-06-30	11
2005-09-30	12
2005-12-31	7
2006-03-31	17
2006-06-30	22
2006-09-30	21
2006-12-31	16
2007-03-31	20
2007-06-30	42
2007-09-30	100
2007-12-31	113
2008-03-31	113
2008-06-30	78
2008-09-30	78
2008-12-31	101
2009-03-31	79
2009-06-30	44
2009-09-30	82
2009-12-31	78
2010-03-31	82
2010-06-30	66
2010-09-30	106
2010-12-31	89
2011-03-31	133
2011-06-30	114
2011-09-30	79
2011-12-31	34
2012-03-31	43
2012-06-30	38
2012-09-30	68
2012-12-31	26
2013-03-31	32
2013-06-30	17
2013-09-30	34
2013-12-31	25
2014-03-31	28
2014-06-30	15
2014-09-30	18
2014-12-31	31
2015-03-31	37
2015-06-30	16
2015-09-30	15
2015-12-31	12
2016-03-31	10
2016-06-30	11
2016-09-30	10
2016-12-31	25
2017-03-31	21
2017-06-30	21
2017-09-30	110
2017-12-31	145
2018-03-31	149
2018-06-30	21
2018-09-30	47
2018-12-31	57
2019-03-31	47
2019-06-30	70
2019-09-30	54
2019-12-31	50
2020-03-31	64
2020-06-30	52
2020-09-30	58
2020-12-31	57
2021-03-31	72
2021-06-30	53
2021-09-30	23
2021-12-31	34
2022-03-31	25
2022-06-30	21
2022-09-30	63
2022-12-31	22
2023-03-31	14
2023-06-30	20
2023-09-30	22