Quarter	US dollars
2004-12-31	1699
2005-03-31	1571
2005-06-30	1841
2005-09-30	44768
2005-12-31	48182
2006-03-31	51867
2006-06-30	47672
2006-09-30	47105
2006-12-31	54630
2007-03-31	55687
2007-06-30	59971
2007-09-30	64376
2007-12-31	67573
2008-03-31	58981
2008-06-30	63767
2008-09-30	61418
2008-12-31	54392
2009-03-31	56231
2009-06-30	66068
2009-09-30	66248
2009-12-31	67045
2010-03-31	68644
2010-06-30	66120
2010-09-30	71263
2010-12-31	76400
2011-03-31	72997
2011-06-30	71658
2011-09-30	60814
2011-12-31	58705
2012-03-31	65698
2012-06-30	60528
2012-09-30	61336
2012-12-31	62463
2013-03-31	57416
2013-06-30	53773
2013-09-30	54477
2013-12-31	52557
2014-03-31	54587
2014-06-30	53970
2014-09-30	52094
2014-12-31	52401
2015-03-31	52812
2015-06-30	55525
2015-09-30	52896
2015-12-31	52619
2016-03-31	47331
2016-06-30	46745
2016-09-30	50554
2016-12-31	49660
2017-03-31	52712
2017-06-30	5532
2017-09-30	6197
2017-12-31	6804
2018-03-31	6499
2018-06-30	5057
2018-09-30	5018
2018-12-31	4516
2019-03-31	4876
2019-06-30	5087
2019-09-30	4556
2019-12-31	4814
2020-03-31	4040
2020-06-30	3610
2020-09-30	3725
2020-12-31	3900
2021-03-31	4671
2021-06-30	4519
2021-09-30	4171
2021-12-31	4278
2022-03-31	5131
2022-06-30	3571
2022-09-30	2833
2022-12-31	3152
2023-03-31	3407
2023-06-30	2660
2023-09-30	2521