Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	11
2005-09-30	11
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	6
2006-12-31	29
2007-03-31	18
2007-06-30	10
2007-09-30	2
2007-12-31	4
2008-03-31	24
2008-06-30	20
2008-09-30	23
2008-12-31	4
2009-03-31	1
2009-06-30	3
2009-09-30	2
2009-12-31	2
2010-03-31	0
2010-06-30	0
2010-09-30	14
2010-12-31	31
2011-03-31	22
2011-06-30	115
2011-09-30	925
2011-12-31	918
2012-03-31	746
2012-06-30	973
2012-09-30	983
2012-12-31	986
2013-03-31	811
2013-06-30	743
2013-09-30	758
2013-12-31	783
2014-03-31	722
2014-06-30	660
2014-09-30	653
2014-12-31	681
2015-03-31	632
2015-06-30	670
2015-09-30	557
2015-12-31	605
2016-03-31	503
2016-06-30	391
2016-09-30	346
2016-12-31	320
2017-03-31	249
2017-06-30	239
2017-09-30	122
2017-12-31	61
2018-03-31	51
2018-06-30	49
2018-09-30	216
2018-12-31	15
2019-03-31	16
2019-06-30	15
2019-09-30	16
2019-12-31	16
2020-03-31	14
2020-06-30	14
2020-09-30	13
2020-12-31	14
2021-03-31	14
2021-06-30	14
2021-09-30	13
2021-12-31	13
2022-03-31	13
2022-06-30	14
2022-09-30	14
2022-12-31	14
2023-03-31	2
2023-06-30	3
2023-09-30	2