Quarter	US dollars
1999-09-30	10
1999-12-31	10
2000-03-31	10
2000-06-30	20
2000-09-30	21
2000-12-31	30
2001-03-31	28
2001-06-30	23
2001-09-30	22
2001-12-31	17
2002-03-31	17
2002-06-30	15
2002-09-30	30
2002-12-31	13
2003-03-31	14
2003-06-30	13
2003-09-30	20
2003-12-31	20
2004-03-31	28
2004-06-30	24
2004-09-30	16
2004-12-31	10
2005-03-31	17
2005-06-30	16
2005-09-30	37
2005-12-31	34
2006-03-31	40
2006-06-30	35
2006-09-30	30
2006-12-31	25
2007-03-31	33
2007-06-30	24
2007-09-30	24
2007-12-31	12
2008-03-31	14
2008-06-30	14
2008-09-30	12
2008-12-31	13
2009-03-31	9
2009-06-30	8
2009-09-30	8
2009-12-31	3
2010-03-31	49
2010-06-30	46
2010-09-30	35
2010-12-31	36
2011-03-31	117
2011-06-30	125
2011-09-30	117
2011-12-31	155
2012-03-31	0
2012-06-30	6
2012-09-30	3
2012-12-31	3
2013-03-31	3
2013-06-30	15
2013-09-30	6
2013-12-31	2
2014-03-31	17
2014-06-30	10
2014-09-30	31
2014-12-31	11
2015-03-31	6
2015-06-30	16
2015-09-30	5
2015-12-31	6
2016-03-31	3
2016-06-30	3
2016-09-30	4
2016-12-31	4
2017-03-31	6
2017-06-30	5
2017-09-30	5
2017-12-31	15
2018-03-31	7
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	0
2019-12-31	0
2020-03-31	33
2020-06-30	33
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	0
2021-09-30	0
2021-12-31	0
2022-03-31	0
2022-06-30	0
2022-09-30	0
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0