Quarter	US dollars
2004-12-31	50
2005-03-31	155
2005-06-30	113
2005-09-30	96
2005-12-31	112
2006-03-31	161
2006-06-30	170
2006-09-30	211
2006-12-31	192
2007-03-31	177
2007-06-30	311
2007-09-30	318
2007-12-31	303
2008-03-31	352
2008-06-30	346
2008-09-30	364
2008-12-31	336
2009-03-31	353
2009-06-30	333
2009-09-30	205
2009-12-31	221
2010-03-31	268
2010-06-30	233
2010-09-30	358
2010-12-31	462
2011-03-31	459
2011-06-30	508
2011-09-30	511
2011-12-31	473
2012-03-31	532
2012-06-30	491
2012-09-30	507
2012-12-31	710
2013-03-31	3115
2013-06-30	3115
2013-09-30	2942
2013-12-31	2335
2014-03-31	2081
2014-06-30	1335
2014-09-30	1308
2014-12-31	1216
2015-03-31	1201
2015-06-30	1051
2015-09-30	944
2015-12-31	916
2016-03-31	887
2016-06-30	912
2016-09-30	860
2016-12-31	1232
2017-03-31	1153
2017-06-30	1108
2017-09-30	875
2017-12-31	832
2018-03-31	779
2018-06-30	676
2018-09-30	406
2018-12-31	803
2019-03-31	799
2019-06-30	659
2019-09-30	614
2019-12-31	655
2020-03-31	654
2020-06-30	570
2020-09-30	540
2020-12-31	478
2021-03-31	448
2021-06-30	301
2021-09-30	356
2021-12-31	306
2022-03-31	347
2022-06-30	455
2022-09-30	616
2022-12-31	598
2023-03-31	556
2023-06-30	458
2023-09-30	544