Quarter	US dollars
2004-12-31	3515
2005-03-31	5424
2005-06-30	6213
2005-09-30	6716
2005-12-31	6600
2006-03-31	8457
2006-06-30	7655
2006-09-30	8213
2006-12-31	9578
2007-03-31	11295
2007-06-30	13236
2007-09-30	14135
2007-12-31	14800
2008-03-31	16431
2008-06-30	17996
2008-09-30	16950
2008-12-31	9816
2009-03-31	13491
2009-06-30	18802
2009-09-30	22811
2009-12-31	23064
2010-03-31	27295
2010-06-30	26290
2010-09-30	36818
2010-12-31	30374
2011-03-31	31669
2011-06-30	37793
2011-09-30	31923
2011-12-31	31907
2012-03-31	35291
2012-06-30	28955
2012-09-30	27574
2012-12-31	25686
2013-03-31	23140
2013-06-30	16182
2013-09-30	19799
2013-12-31	18587
2014-03-31	21493
2014-06-30	17022
2014-09-30	15756
2014-12-31	13488
2015-03-31	15487
2015-06-30	14749
2015-09-30	11428
2015-12-31	9809
2016-03-31	12427
2016-06-30	14015
2016-09-30	3380
2016-12-31	2788
2017-03-31	3517
2017-06-30	2534
2017-09-30	3483
2017-12-31	2725
2018-03-31	3788
2018-06-30	3677
2018-09-30	5631
2018-12-31	6699
2019-03-31	7854
2019-06-30	7190
2019-09-30	12442
2019-12-31	8908
2020-03-31	5940
2020-06-30	4541
2020-09-30	5022
2020-12-31	10465
2021-03-31	10903
2021-06-30	9841
2021-09-30	9646
2021-12-31	23473
2022-03-31	16216
2022-06-30	3174
2022-09-30	19649
2022-12-31	23259
2023-03-31	23954
2023-06-30	24185
2023-09-30	8838