Quarter	US dollars
2004-12-31	3909
2005-03-31	5034
2005-06-30	5184
2005-09-30	4723
2005-12-31	4393
2006-03-31	5387
2006-06-30	6131
2006-09-30	6105
2006-12-31	7511
2007-03-31	6853
2007-06-30	8712
2007-09-30	8967
2007-12-31	9939
2008-03-31	9959
2008-06-30	9192
2008-09-30	8465
2008-12-31	9255
2009-03-31	9491
2009-06-30	8871
2009-09-30	8777
2009-12-31	8153
2010-03-31	8575
2010-06-30	8877
2010-09-30	9065
2010-12-31	8494
2011-03-31	8235
2011-06-30	7440
2011-09-30	8190
2011-12-31	9102
2012-03-31	9611
2012-06-30	9446
2012-09-30	9817
2012-12-31	9379
2013-03-31	9052
2013-06-30	9182
2013-09-30	9692
2013-12-31	10130
2014-03-31	11806
2014-06-30	11800
2014-09-30	9944
2014-12-31	10331
2015-03-31	10249
2015-06-30	10262
2015-09-30	9708
2015-12-31	10084
2016-03-31	10259
2016-06-30	12400
2016-09-30	12890
2016-12-31	12497
2017-03-31	11176
2017-06-30	8859
2017-09-30	12964
2017-12-31	13199
2018-03-31	13024
2018-06-30	11756
2018-09-30	11802
2018-12-31	11728
2019-03-31	12758
2019-06-30	12269
2019-09-30	12420
2019-12-31	12127
2020-03-31	11934
2020-06-30	11166
2020-09-30	10428
2020-12-31	10735
2021-03-31	10979
2021-06-30	11508
2021-09-30	12399
2021-12-31	12061
2022-03-31	11977
2022-06-30	11694
2022-09-30	11547
2022-12-31	12221
2023-03-31	11755
2023-06-30	10873
2023-09-30	10740