Quarter	US dollars
2004-12-31	166814
2005-03-31	178633
2005-06-30	160128
2005-09-30	162758
2005-12-31	147050
2006-03-31	184464
2006-06-30	177915
2006-09-30	196493
2006-12-31	211922
2007-03-31	229737
2007-06-30	233083
2007-09-30	267875
2007-12-31	247477
2008-03-31	272371
2008-06-30	208811
2008-09-30	212833
2008-12-31	136839
2009-03-31	129198
2009-06-30	137241
2009-09-30	110902
2009-12-31	98309
2010-03-31	92446
2010-06-30	84636
2010-09-30	95995
2010-12-31	84524
2011-03-31	92974
2011-06-30	91103
2011-09-30	65067
2011-12-31	54288
2012-03-31	55558
2012-06-30	57572
2012-09-30	66775
2012-12-31	68329
2013-03-31	75823
2013-06-30	71825
2013-09-30	80045
2013-12-31	81633
2014-03-31	87141
2014-06-30	83336
2014-09-30	89544
2014-12-31	87091
2015-03-31	77126
2015-06-30	74600
2015-09-30	72163
2015-12-31	64955
2016-03-31	68362
2016-06-30	68511
2016-09-30	64240
2016-12-31	66426
2017-03-31	66909
2017-06-30	66470
2017-09-30	64249
2017-12-31	65145
2018-03-31	67972
2018-06-30	65552
2018-09-30	64755
2018-12-31	58514
2019-03-31	63951
2019-06-30	54317
2019-09-30	56589
2019-12-31	60792
2020-03-31	65111
2020-06-30	58702
2020-09-30	57317
2020-12-31	54510
2021-03-31	61280
2021-06-30	67923
2021-09-30	71426
2021-12-31	67482
2022-03-31	65427
2022-06-30	55193
2022-09-30	56015
2022-12-31	55484
2023-03-31	63620
2023-06-30	61929
2023-09-30	60673