Quarter	US dollars
2004-12-31	167
2005-03-31	161
2005-06-30	249
2005-09-30	152
2005-12-31	251
2006-03-31	527
2006-06-30	379
2006-09-30	4131
2006-12-31	4517
2007-03-31	720
2007-06-30	646
2007-09-30	597
2007-12-31	641
2008-03-31	1200
2008-06-30	909
2008-09-30	745
2008-12-31	871
2009-03-31	966
2009-06-30	711
2009-09-30	731
2009-12-31	824
2010-03-31	701
2010-06-30	501
2010-09-30	592
2010-12-31	573
2011-03-31	436
2011-06-30	435
2011-09-30	391
2011-12-31	533
2012-03-31	313
2012-06-30	533
2012-09-30	525
2012-12-31	485
2013-03-31	463
2013-06-30	463
2013-09-30	483
2013-12-31	274
2014-03-31	272
2014-06-30	255
2014-09-30	238
2014-12-31	423
2015-03-31	202
2015-06-30	217
2015-09-30	194
2015-12-31	190
2016-03-31	171
2016-06-30	153
2016-09-30	145
2016-12-31	118
2017-03-31	99
2017-06-30	101
2017-09-30	109
2017-12-31	103
2018-03-31	108
2018-06-30	77
2018-09-30	76
2018-12-31	88
2019-03-31	85
2019-06-30	17
2019-09-30	16
2019-12-31	17
2020-03-31	16
2020-06-30	16
2020-09-30	17
2020-12-31	3
2021-03-31	3
2021-06-30	3
2021-09-30	3
2021-12-31	4
2022-03-31	3
2022-06-30	4
2022-09-30	3
2022-12-31	2
2023-03-31	1
2023-06-30	3
2023-09-30	2