Quarter	US dollars
2004-12-31	86
2005-03-31	168
2005-06-30	56
2005-09-30	35
2005-12-31	96
2006-03-31	198
2006-06-30	150
2006-09-30	77
2006-12-31	364
2007-03-31	479
2007-06-30	469
2007-09-30	1279
2007-12-31	671
2008-03-31	644
2008-06-30	802
2008-09-30	597
2008-12-31	513
2009-03-31	509
2009-06-30	1485
2009-09-30	996
2009-12-31	562
2010-03-31	669
2010-06-30	646
2010-09-30	775
2010-12-31	1479
2011-03-31	1730
2011-06-30	1692
2011-09-30	930
2011-12-31	1144
2012-03-31	1013
2012-06-30	976
2012-09-30	2269
2012-12-31	2902
2013-03-31	3861
2013-06-30	4577
2013-09-30	2988
2013-12-31	3239
2014-03-31	2849
2014-06-30	3272
2014-09-30	3215
2014-12-31	2881
2015-03-31	2787
2015-06-30	2680
2015-09-30	2501
2015-12-31	2626
2016-03-31	2555
2016-06-30	2627
2016-09-30	2537
2016-12-31	2431
2017-03-31	2556
2017-06-30	1968
2017-09-30	1540
2017-12-31	1242
2018-03-31	1022
2018-06-30	1035
2018-09-30	750
2018-12-31	723
2019-03-31	794
2019-06-30	678
2019-09-30	695
2019-12-31	770
2020-03-31	1176
2020-06-30	1138
2020-09-30	302
2020-12-31	388
2021-03-31	292
2021-06-30	48
2021-09-30	51
2021-12-31	197
2022-03-31	366
2022-06-30	80
2022-09-30	399
2022-12-31	222
2023-03-31	438
2023-06-30	300
2023-09-30	607