Quarter	US dollars
1999-03-31	1
1999-06-30	0
1999-09-30	0
1999-12-31	5
2000-03-31	9
2000-06-30	14
2000-09-30	6
2000-12-31	3
2001-03-31	15
2001-06-30	9
2001-09-30	14
2001-12-31	14
2002-03-31	1
2002-06-30	0
2002-09-30	0
2002-12-31	1
2003-03-31	1
2003-06-30	2
2003-09-30	2
2003-12-31	2
2004-03-31	3
2004-06-30	3
2004-09-30	4
2004-12-31	4
2005-03-31	6
2005-06-30	7
2005-09-30	3
2005-12-31	2
2006-03-31	3
2006-06-30	2
2006-09-30	2
2006-12-31	3
2007-03-31	3
2007-06-30	3
2007-09-30	9
2007-12-31	3
2008-03-31	2
2008-06-30	2
2008-09-30	1
2008-12-31	3
2009-03-31	4
2009-06-30	4
2009-09-30	2
2009-12-31	4
2010-03-31	6
2010-06-30	5
2010-09-30	16
2010-12-31	4
2011-03-31	11
2011-06-30	5
2011-09-30	12
2011-12-31	3
2012-03-31	15
2012-06-30	6
2012-09-30	10
2012-12-31	7
2013-03-31	6
2013-06-30	16
2013-09-30	15
2013-12-31	0
2014-03-31	0
2014-06-30	0
2014-09-30	1
2014-12-31	1
2015-03-31	1
2015-06-30	1
2015-09-30	8
2015-12-31	1
2016-03-31	1
2016-06-30	1
2016-09-30	4
2016-12-31	5
2017-03-31	2
2017-06-30	20
2017-09-30	1
2017-12-31	1
2018-03-31	2
2018-06-30	2
2018-09-30	3
2018-12-31	1
2019-03-31	1
2019-06-30	439
2019-09-30	475
2019-12-31	412
2020-03-31	100
2020-06-30	537
2020-09-30	618
2020-12-31	497
2021-03-31	455
2021-06-30	42
2021-09-30	469
2021-12-31	554
2022-03-31	710
2022-06-30	666
2022-09-30	594
2022-12-31	694
2023-03-31	414
2023-06-30	397
2023-09-30	345