Quarter	US dollars
2004-12-31	42898
2005-03-31	44175
2005-06-30	48308
2005-09-30	51423
2005-12-31	60191
2006-03-31	62378
2006-06-30	66338
2006-09-30	69389
2006-12-31	86357
2007-03-31	82367
2007-06-30	83025
2007-09-30	91003
2007-12-31	88488
2008-03-31	83871
2008-06-30	80951
2008-09-30	73645
2008-12-31	35530
2009-03-31	41566
2009-06-30	41158
2009-09-30	34203
2009-12-31	34069
2010-03-31	34881
2010-06-30	30534
2010-09-30	33374
2010-12-31	30770
2011-03-31	28423
2011-06-30	26942
2011-09-30	10821
2011-12-31	10449
2012-03-31	7300
2012-06-30	8132
2012-09-30	9552
2012-12-31	6115
2013-03-31	4234
2013-06-30	4150
2013-09-30	5514
2013-12-31	5243
2014-03-31	5344
2014-06-30	5040
2014-09-30	8085
2014-12-31	4918
2015-03-31	4603
2015-06-30	4349
2015-09-30	3557
2015-12-31	5006
2016-03-31	5157
2016-06-30	4194
2016-09-30	4026
2016-12-31	4249
2017-03-31	3686
2017-06-30	4140
2017-09-30	4096
2017-12-31	4365
2018-03-31	6988
2018-06-30	7023
2018-09-30	6382
2018-12-31	7663
2019-03-31	13727
2019-06-30	12559
2019-09-30	10644
2019-12-31	11395
2020-03-31	9457
2020-06-30	10736
2020-09-30	10076
2020-12-31	10612
2021-03-31	8789
2021-06-30	7732
2021-09-30	6765
2021-12-31	10461
2022-03-31	8582
2022-06-30	8049
2022-09-30	7098
2022-12-31	6263
2023-03-31	5533
2023-06-30	6030
2023-09-30	6881