Quarter	US dollars
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	6
2006-09-30	6
2006-12-31	6
2007-03-31	10
2007-06-30	4
2007-09-30	4
2007-12-31	6
2008-03-31	0
2008-06-30	0
2008-09-30	0
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	0
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	13
2010-12-31	133
2011-03-31	111
2011-06-30	111
2011-09-30	1912
2011-12-31	1894
2012-03-31	3046
2012-06-30	2938
2012-09-30	2826
2012-12-31	3137
2013-03-31	2840
2013-06-30	2961
2013-09-30	2725
2013-12-31	2129
2014-03-31	1866
2014-06-30	1715
2014-09-30	1673
2014-12-31	1455
2015-03-31	1333
2015-06-30	1379
2015-09-30	1274
2015-12-31	1137
2016-03-31	1005
2016-06-30	910
2016-09-30	873
2016-12-31	768
2017-03-31	702
2017-06-30	670
2017-09-30	535
2017-12-31	499
2018-03-31	163
2018-06-30	121
2018-09-30	181
2018-12-31	50
2019-03-31	50
2019-06-30	29
2019-09-30	22
2019-12-31	16
2020-03-31	17
2020-06-30	10
2020-09-30	10
2020-12-31	11
2021-03-31	10
2021-06-30	3
2021-09-30	3
2021-12-31	1
2022-03-31	3
2022-06-30	2
2022-09-30	2
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0