Quarter	US dollars
2004-12-31	1839
2005-03-31	1070
2005-06-30	480
2005-09-30	515
2005-12-31	488
2006-03-31	366
2006-06-30	690
2006-09-30	460
2006-12-31	389
2007-03-31	810
2007-06-30	933
2007-09-30	1139
2007-12-31	1543
2008-03-31	2105
2008-06-30	1725
2008-09-30	1656
2008-12-31	1573
2009-03-31	1270
2009-06-30	1403
2009-09-30	1516
2009-12-31	1205
2010-03-31	1539
2010-06-30	2303
2010-09-30	1886
2010-12-31	2304
2011-03-31	3269
2011-06-30	3743
2011-09-30	3180
2011-12-31	2945
2012-03-31	2255
2012-06-30	2582
2012-09-30	3475
2012-12-31	3259
2013-03-31	3596
2013-06-30	5133
2013-09-30	4738
2013-12-31	4069
2014-03-31	3730
2014-06-30	4064
2014-09-30	3521
2014-12-31	3118
2015-03-31	3076
2015-06-30	2252
2015-09-30	2016
2015-12-31	1746
2016-03-31	1771
2016-06-30	1970
2016-09-30	1282
2016-12-31	973
2017-03-31	906
2017-06-30	940
2017-09-30	1193
2017-12-31	1320
2018-03-31	1158
2018-06-30	984
2018-09-30	858
2018-12-31	1107
2019-03-31	985
2019-06-30	1135
2019-09-30	1328
2019-12-31	1267
2020-03-31	1317
2020-06-30	1507
2020-09-30	1190
2020-12-31	1243
2021-03-31	1515
2021-06-30	1281
2021-09-30	1664
2021-12-31	1640
2022-03-31	1340
2022-06-30	1094
2022-09-30	1134
2022-12-31	1060
2023-03-31	1426
2023-06-30	1732
2023-09-30	1324