Quarter	US dollars
2004-12-31	1089
2005-03-31	1278
2005-06-30	1212
2005-09-30	1374
2005-12-31	1205
2006-03-31	1192
2006-06-30	1200
2006-09-30	1330
2006-12-31	1429
2007-03-31	1587
2007-06-30	1611
2007-09-30	1683
2007-12-31	1559
2008-03-31	1562
2008-06-30	1463
2008-09-30	1383
2008-12-31	1259
2009-03-31	1250
2009-06-30	1177
2009-09-30	1166
2009-12-31	1145
2010-03-31	1154
2010-06-30	925
2010-09-30	1016
2010-12-31	376
2011-03-31	577
2011-06-30	159
2011-09-30	274
2011-12-31	309
2012-03-31	289
2012-06-30	235
2012-09-30	266
2012-12-31	126
2013-03-31	150
2013-06-30	126
2013-09-30	175
2013-12-31	180
2014-03-31	612
2014-06-30	301
2014-09-30	101
2014-12-31	119
2015-03-31	137
2015-06-30	148
2015-09-30	114
2015-12-31	151
2016-03-31	194
2016-06-30	193
2016-09-30	169
2016-12-31	194
2017-03-31	153
2017-06-30	603
2017-09-30	667
2017-12-31	549
2018-03-31	549
2018-06-30	544
2018-09-30	426
2018-12-31	539
2019-03-31	547
2019-06-30	465
2019-09-30	482
2019-12-31	398
2020-03-31	487
2020-06-30	389
2020-09-30	370
2020-12-31	379
2021-03-31	505
2021-06-30	1088
2021-09-30	460
2021-12-31	244
2022-03-31	288
2022-06-30	309
2022-09-30	271
2022-12-31	307
2023-03-31	317
2023-06-30	802
2023-09-30	522