Quarter	US dollars
2004-12-31	1046
2005-03-31	1238
2005-06-30	1154
2005-09-30	1343
2005-12-31	1147
2006-03-31	1124
2006-06-30	1152
2006-09-30	1310
2006-12-31	1327
2007-03-31	1487
2007-06-30	1513
2007-09-30	1585
2007-12-31	1501
2008-03-31	1499
2008-06-30	1351
2008-09-30	1285
2008-12-31	1157
2009-03-31	1167
2009-06-30	1090
2009-09-30	1086
2009-12-31	1066
2010-03-31	1074
2010-06-30	916
2010-09-30	1004
2010-12-31	374
2011-03-31	353
2011-06-30	173
2011-09-30	268
2011-12-31	311
2012-03-31	292
2012-06-30	256
2012-09-30	262
2012-12-31	126
2013-03-31	170
2013-06-30	133
2013-09-30	183
2013-12-31	159
2014-03-31	534
2014-06-30	231
2014-09-30	101
2014-12-31	120
2015-03-31	135
2015-06-30	167
2015-09-30	138
2015-12-31	181
2016-03-31	226
2016-06-30	220
2016-09-30	194
2016-12-31	182
2017-03-31	171
2017-06-30	487
2017-09-30	515
2017-12-31	549
2018-03-31	377
2018-06-30	448
2018-09-30	336
2018-12-31	425
2019-03-31	392
2019-06-30	365
2019-09-30	303
2019-12-31	215
2020-03-31	1815
2020-06-30	323
2020-09-30	304
2020-12-31	281
2021-03-31	344
2021-06-30	952
2021-09-30	437
2021-12-31	237
2022-03-31	247
2022-06-30	278
2022-09-30	200
2022-12-31	219
2023-03-31	224
2023-06-30	701
2023-09-30	433