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	0
2001-03-31	0
2001-06-30	0
2001-09-30	0
2001-12-31	0
2002-03-31	0
2002-06-30	0
2002-09-30	0
2002-12-31	0
2003-03-31	0
2003-06-30	0
2003-09-30	0
2003-12-31	0
2004-03-31	0
2004-06-30	0
2004-09-30	0
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	4
2007-09-30	2
2007-12-31	10
2008-03-31	20
2008-06-30	22
2008-09-30	2
2008-12-31	23
2009-03-31	26
2009-06-30	7
2009-09-30	8
2009-12-31	0
2010-03-31	2
2010-06-30	3
2010-09-30	5
2010-12-31	2
2011-03-31	22
2011-06-30	0
2011-09-30	42
2011-12-31	40
2012-03-31	50
2012-06-30	67
2012-09-30	65
2012-12-31	36
2013-03-31	32
2013-06-30	33
2013-09-30	31
2013-12-31	25
2014-03-31	20
2014-06-30	14
2014-09-30	15
2014-12-31	53
2015-03-31	117
2015-06-30	107
2015-09-30	82
2015-12-31	67
2016-03-31	33
2016-06-30	128
2016-09-30	149
2016-12-31	128
2017-03-31	114
2017-06-30	74
2017-09-30	97
2017-12-31	61
2018-03-31	22
2018-06-30	42
2018-09-30	85
2018-12-31	60
2019-03-31	102
2019-06-30	73
2019-09-30	122
2019-12-31	112
2020-03-31	227
2020-06-30	166
2020-09-30	44
2020-12-31	49
2021-03-31	120
2021-06-30	108
2021-09-30	62
2021-12-31	44
2022-03-31	14
2022-06-30	17
2022-09-30	66
2022-12-31	95
2023-03-31	60
2023-06-30	305
2023-09-30	159