Quarter	US dollars
2004-12-31	33
2005-03-31	36
2005-06-30	54
2005-09-30	30
2005-12-31	29
2006-03-31	17
2006-06-30	30
2006-09-30	80
2006-12-31	43
2007-03-31	65
2007-06-30	62
2007-09-30	104
2007-12-31	281
2008-03-31	590
2008-06-30	402
2008-09-30	923
2008-12-31	2145
2009-03-31	1856
2009-06-30	1148
2009-09-30	1399
2009-12-31	1069
2010-03-31	3727
2010-06-30	809
2010-09-30	843
2010-12-31	1035
2011-03-31	1095
2011-06-30	1556
2011-09-30	2371
2011-12-31	2131
2012-03-31	2257
2012-06-30	1762
2012-09-30	1663
2012-12-31	1486
2013-03-31	1315
2013-06-30	1154
2013-09-30	1040
2013-12-31	960
2014-03-31	1387
2014-06-30	1547
2014-09-30	1658
2014-12-31	2027
2015-03-31	1960
2015-06-30	1239
2015-09-30	1427
2015-12-31	1271
2016-03-31	1308
2016-06-30	1213
2016-09-30	1281
2016-12-31	1011
2017-03-31	916
2017-06-30	955
2017-09-30	979
2017-12-31	816
2018-03-31	617
2018-06-30	582
2018-09-30	625
2018-12-31	743
2019-03-31	783
2019-06-30	886
2019-09-30	962
2019-12-31	801
2020-03-31	1312
2020-06-30	1214
2020-09-30	863
2020-12-31	808
2021-03-31	800
2021-06-30	811
2021-09-30	742
2021-12-31	615
2022-03-31	573
2022-06-30	790
2022-09-30	781
2022-12-31	422
2023-03-31	281
2023-06-30	833
2023-09-30	550