Quarter	US dollars
2004-12-31	0
2005-03-31	85
2005-06-30	73
2005-09-30	73
2005-12-31	65
2006-03-31	66
2006-06-30	63
2006-09-30	60
2006-12-31	57
2007-03-31	57
2007-06-30	50
2007-09-30	51
2007-12-31	38
2008-03-31	38
2008-06-30	32
2008-09-30	29
2008-12-31	24
2009-03-31	24
2009-06-30	21
2009-09-30	19
2009-12-31	13
2010-03-31	14
2010-06-30	0
2010-09-30	0
2010-12-31	0
2011-03-31	0
2011-06-30	0
2011-09-30	0
2011-12-31	0
2012-03-31	0
2012-06-30	0
2012-09-30	0
2012-12-31	0
2013-03-31	0
2013-06-30	0
2013-09-30	0
2013-12-31	0
2014-03-31	0
2014-06-30	0
2014-09-30	0
2014-12-31	0
2015-03-31	0
2015-06-30	0
2015-09-30	0
2015-12-31	0
2016-03-31	0
2016-06-30	0
2016-09-30	0
2016-12-31	0
2017-03-31	0
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	1
2019-06-30	1
2019-09-30	5
2019-12-31	0
2020-03-31	0
2020-06-30	2
2020-09-30	0
2020-12-31	0
2021-03-31	0
2021-06-30	10
2021-09-30	9
2021-12-31	0
2022-03-31	-5
2022-06-30	-1
2022-09-30	1
2022-12-31	7
2023-03-31	1
2023-06-30	6
2023-09-30	6