Quarter	US dollars
2004-12-31	46
2005-03-31	55
2005-06-30	50
2005-09-30	64
2005-12-31	55
2006-03-31	106
2006-06-30	111
2006-09-30	88
2006-12-31	70
2007-03-31	69
2007-06-30	86
2007-09-30	122
2007-12-31	149
2008-03-31	324
2008-06-30	394
2008-09-30	312
2008-12-31	285
2009-03-31	304
2009-06-30	318
2009-09-30	347
2009-12-31	365
2010-03-31	238
2010-06-30	337
2010-09-30	362
2010-12-31	427
2011-03-31	394
2011-06-30	543
2011-09-30	615
2011-12-31	807
2012-03-31	906
2012-06-30	1136
2012-09-30	1000
2012-12-31	952
2013-03-31	906
2013-06-30	743
2013-09-30	970
2013-12-31	927
2014-03-31	845
2014-06-30	882
2014-09-30	644
2014-12-31	940
2015-03-31	958
2015-06-30	1055
2015-09-30	930
2015-12-31	843
2016-03-31	948
2016-06-30	902
2016-09-30	713
2016-12-31	682
2017-03-31	607
2017-06-30	673
2017-09-30	796
2017-12-31	759
2018-03-31	710
2018-06-30	739
2018-09-30	519
2018-12-31	485
2019-03-31	461
2019-06-30	526
2019-09-30	554
2019-12-31	616
2020-03-31	659
2020-06-30	560
2020-09-30	438
2020-12-31	359
2021-03-31	319
2021-06-30	395
2021-09-30	512
2021-12-31	586
2022-03-31	565
2022-06-30	474
2022-09-30	309
2022-12-31	257
2023-03-31	364
2023-06-30	286
2023-09-30	467