Quarter	US dollars
2004-12-31	290
2005-03-31	316
2005-06-30	307
2005-09-30	306
2005-12-31	348
2006-03-31	406
2006-06-30	435
2006-09-30	445
2006-12-31	434
2007-03-31	441
2007-06-30	582
2007-09-30	605
2007-12-31	587
2008-03-31	1509
2008-06-30	1735
2008-09-30	1447
2008-12-31	1052
2009-03-31	995
2009-06-30	1082
2009-09-30	1148
2009-12-31	1082
2010-03-31	1098
2010-06-30	911
2010-09-30	1095
2010-12-31	1475
2011-03-31	1403
2011-06-30	1222
2011-09-30	1086
2011-12-31	1071
2012-03-31	1032
2012-06-30	1150
2012-09-30	1129
2012-12-31	1049
2013-03-31	3285
2013-06-30	1421
2013-09-30	1867
2013-12-31	1997
2014-03-31	2169
2014-06-30	1547
2014-09-30	1637
2014-12-31	1428
2015-03-31	1357
2015-06-30	1277
2015-09-30	1154
2015-12-31	1270
2016-03-31	1235
2016-06-30	1414
2016-09-30	1273
2016-12-31	1394
2017-03-31	1362
2017-06-30	757
2017-09-30	692
2017-12-31	689
2018-03-31	801
2018-06-30	729
2018-09-30	672
2018-12-31	631
2019-03-31	558
2019-06-30	608
2019-09-30	626
2019-12-31	518
2020-03-31	416
2020-06-30	370
2020-09-30	282
2020-12-31	287
2021-03-31	204
2021-06-30	184
2021-09-30	202
2021-12-31	163
2022-03-31	162
2022-06-30	155
2022-09-30	167
2022-12-31	172
2023-03-31	166
2023-06-30	157
2023-09-30	162