Quarter	US dollars
2004-12-31	6
2005-03-31	6
2005-06-30	5
2005-09-30	5
2005-12-31	5
2006-03-31	5
2006-06-30	105
2006-09-30	106
2006-12-31	106
2007-03-31	106
2007-06-30	106
2007-09-30	108
2007-12-31	106
2008-03-31	105
2008-06-30	105
2008-09-30	105
2008-12-31	4
2009-03-31	6
2009-06-30	5
2009-09-30	5
2009-12-31	5
2010-03-31	5
2010-06-30	4
2010-09-30	6
2010-12-31	6
2011-03-31	5
2011-06-30	5
2011-09-30	90
2011-12-31	90
2012-03-31	614
2012-06-30	659
2012-09-30	656
2012-12-31	800
2013-03-31	931
2013-06-30	1080
2013-09-30	1085
2013-12-31	1023
2014-03-31	967
2014-06-30	923
2014-09-30	905
2014-12-31	979
2015-03-31	860
2015-06-30	933
2015-09-30	929
2015-12-31	891
2016-03-31	896
2016-06-30	702
2016-09-30	674
2016-12-31	645
2017-03-31	653
2017-06-30	572
2017-09-30	433
2017-12-31	404
2018-03-31	375
2018-06-30	199
2018-09-30	245
2018-12-31	172
2019-03-31	176
2019-06-30	158
2019-09-30	139
2019-12-31	114
2020-03-31	33
2020-06-30	33
2020-09-30	34
2020-12-31	33
2021-03-31	33
2021-06-30	33
2021-09-30	46
2021-12-31	13
2022-03-31	13
2022-06-30	8
2022-09-30	8
2022-12-31	58
2023-03-31	58
2023-06-30	58
2023-09-30	50