Quarter	US dollars
2004-12-31	685
2005-03-31	690
2005-06-30	721
2005-09-30	810
2005-12-31	1620
2006-03-31	1591
2006-06-30	1766
2006-09-30	1878
2006-12-31	2282
2007-03-31	3046
2007-06-30	3409
2007-09-30	4008
2007-12-31	4758
2008-03-31	4508
2008-06-30	4649
2008-09-30	4571
2008-12-31	4116
2009-03-31	3386
2009-06-30	3906
2009-09-30	2490
2009-12-31	1926
2010-03-31	1985
2010-06-30	2433
2010-09-30	4634
2010-12-31	6015
2011-03-31	6417
2011-06-30	6194
2011-09-30	7967
2011-12-31	7560
2012-03-31	7452
2012-06-30	7258
2012-09-30	7986
2012-12-31	6642
2013-03-31	18191
2013-06-30	17143
2013-09-30	16664
2013-12-31	14095
2014-03-31	12315
2014-06-30	11629
2014-09-30	12448
2014-12-31	11567
2015-03-31	10451
2015-06-30	9206
2015-09-30	8272
2015-12-31	8173
2016-03-31	8254
2016-06-30	7933
2016-09-30	7654
2016-12-31	6733
2017-03-31	6479
2017-06-30	6414
2017-09-30	5497
2017-12-31	5105
2018-03-31	5013
2018-06-30	5069
2018-09-30	4836
2018-12-31	4506
2019-03-31	4583
2019-06-30	4865
2019-09-30	4869
2019-12-31	5424
2020-03-31	4866
2020-06-30	4970
2020-09-30	5135
2020-12-31	5274
2021-03-31	5321
2021-06-30	5412
2021-09-30	5417
2021-12-31	5307
2022-03-31	5446
2022-06-30	5348
2022-09-30	5598
2022-12-31	5305
2023-03-31	5543
2023-06-30	5818
2023-09-30	5946