Quarter	US dollars
2004-12-31	676
2005-03-31	684
2005-06-30	608
2005-09-30	472
2005-12-31	1128
2006-03-31	1169
2006-06-30	1633
2006-09-30	1683
2006-12-31	2221
2007-03-31	3646
2007-06-30	5782
2007-09-30	5727
2007-12-31	5437
2008-03-31	5142
2008-06-30	5308
2008-09-30	3703
2008-12-31	2855
2009-03-31	2558
2009-06-30	2534
2009-09-30	1775
2009-12-31	2188
2010-03-31	2136
2010-06-30	4085
2010-09-30	5303
2010-12-31	11929
2011-03-31	10707
2011-06-30	10883
2011-09-30	21776
2011-12-31	21730
2012-03-31	60785
2012-06-30	59638
2012-09-30	55415
2012-12-31	66969
2013-03-31	98467
2013-06-30	98889
2013-09-30	90588
2013-12-31	66322
2014-03-31	71907
2014-06-30	63609
2014-09-30	70644
2014-12-31	68460
2015-03-31	64584
2015-06-30	67901
2015-09-30	60606
2015-12-31	50118
2016-03-31	53972
2016-06-30	48344
2016-09-30	46817
2016-12-31	44676
2017-03-31	43617
2017-06-30	38724
2017-09-30	36529
2017-12-31	35158
2018-03-31	29452
2018-06-30	30054
2018-09-30	25161
2018-12-31	29510
2019-03-31	30587
2019-06-30	30627
2019-09-30	30205
2019-12-31	28958
2020-03-31	30957
2020-06-30	27477
2020-09-30	25739
2020-12-31	22716
2021-03-31	22094
2021-06-30	22799
2021-09-30	22025
2021-12-31	22868
2022-03-31	23839
2022-06-30	22008
2022-09-30	13960
2022-12-31	12486
2023-03-31	11577
2023-06-30	9764
2023-09-30	9963