Quarter	US dollars
2004-12-31	6009
2005-03-31	6675
2005-06-30	6469
2005-09-30	11610
2005-12-31	10818
2006-03-31	12686
2006-06-30	11513
2006-09-30	13707
2006-12-31	13382
2007-03-31	16820
2007-06-30	18561
2007-09-30	21611
2007-12-31	28046
2008-03-31	28924
2008-06-30	30267
2008-09-30	27512
2008-12-31	28983
2009-03-31	31431
2009-06-30	33389
2009-09-30	33558
2009-12-31	36088
2010-03-31	42539
2010-06-30	38762
2010-09-30	43963
2010-12-31	52200
2011-03-31	56722
2011-06-30	54035
2011-09-30	50770
2011-12-31	49758
2012-03-31	50482
2012-06-30	54162
2012-09-30	55194
2012-12-31	55867
2013-03-31	50738
2013-06-30	47048
2013-09-30	48844
2013-12-31	43016
2014-03-31	45387
2014-06-30	42724
2014-09-30	42188
2014-12-31	41769
2015-03-31	39913
2015-06-30	40707
2015-09-30	38266
2015-12-31	37747
2016-03-31	39314
2016-06-30	38686
2016-09-30	42443
2016-12-31	37075
2017-03-31	39386
2017-06-30	39532
2017-09-30	36698
2017-12-31	37506
2018-03-31	41564
2018-06-30	38215
2018-09-30	37953
2018-12-31	39887
2019-03-31	43063
2019-06-30	42765
2019-09-30	43514
2019-12-31	46029
2020-03-31	48100
2020-06-30	49029
2020-09-30	46626
2020-12-31	52274
2021-03-31	50644
2021-06-30	50222
2021-09-30	51320
2021-12-31	58374
2022-03-31	53201
2022-06-30	49243
2022-09-30	49947
2022-12-31	46243
2023-03-31	49751
2023-06-30	46350
2023-09-30	41984