Quarter	US dollars
2004-12-31	90877
2005-03-31	93131
2005-06-30	99412
2005-09-30	116682
2005-12-31	98268
2006-03-31	92074
2006-06-30	110949
2006-09-30	126881
2006-12-31	119518
2007-03-31	148355
2007-06-30	105799
2007-09-30	117442
2007-12-31	90247
2008-03-31	103779
2008-06-30	111360
2008-09-30	125323
2008-12-31	100258
2009-03-31	135960
2009-06-30	155076
2009-09-30	163309
2009-12-31	158241
2010-03-31	188737
2010-06-30	228096
2010-09-30	210580
2010-12-31	193325
2011-03-31	215801
2011-06-30	216868
2011-09-30	278431
2011-12-31	314152
2012-03-31	424204
2012-06-30	400454
2012-09-30	361148
2012-12-31	373145
2013-03-31	277390
2013-06-30	263847
2013-09-30	238964
2013-12-31	227068
2014-03-31	231585
2014-06-30	180938
2014-09-30	176902
2014-12-31	183700
2015-03-31	184214
2015-06-30	191950
2015-09-30	208726
2015-12-31	221969
2016-03-31	221034
2016-06-30	251890
2016-09-30	255169
2016-12-31	234592
2017-03-31	261131
2017-06-30	286411
2017-09-30	295431
2017-12-31	315079
2018-03-31	290061
2018-06-30	300009
2018-09-30	303950
2018-12-31	266781
2019-03-31	260883
2019-06-30	256492
2019-09-30	229411
2019-12-31	248574
2020-03-31	252482
2020-06-30	301783
2020-09-30	321322
2020-12-31	361441
2021-03-31	381410
2021-06-30	373018
2021-09-30	330025
2021-12-31	350975
2022-03-31	361738
2022-06-30	361544
2022-09-30	313775
2022-12-31	336815
2023-03-31	330242
2023-06-30	342414
2023-09-30	344262