Quarter	US dollars
2004-12-31	5015
2005-03-31	7225
2005-06-30	4171
2005-09-30	5487
2005-12-31	3517
2006-03-31	4912
2006-06-30	4522
2006-09-30	5063
2006-12-31	4074
2007-03-31	5162
2007-06-30	5060
2007-09-30	4715
2007-12-31	8115
2008-03-31	6815
2008-06-30	7586
2008-09-30	8592
2008-12-31	3414
2009-03-31	3305
2009-06-30	2711
2009-09-30	5844
2009-12-31	4437
2010-03-31	7944
2010-06-30	5129
2010-09-30	9061
2010-12-31	6954
2011-03-31	7650
2011-06-30	6076
2011-09-30	9656
2011-12-31	5495
2012-03-31	8209
2012-06-30	8152
2012-09-30	9996
2012-12-31	5720
2013-03-31	4393
2013-06-30	5962
2013-09-30	5951
2013-12-31	3401
2014-03-31	2221
2014-06-30	2792
2014-09-30	2378
2014-12-31	1569
2015-03-31	2533
2015-06-30	2060
2015-09-30	2405
2015-12-31	2353
2016-03-31	2407
2016-06-30	1935
2016-09-30	1245
2016-12-31	1029
2017-03-31	962
2017-06-30	1194
2017-09-30	1052
2017-12-31	2090
2018-03-31	3632
2018-06-30	2407
2018-09-30	2042
2018-12-31	590
2019-03-31	1371
2019-06-30	3177
2019-09-30	2656
2019-12-31	2378
2020-03-31	2969
2020-06-30	3096
2020-09-30	3196
2020-12-31	3713
2021-03-31	3479
2021-06-30	2943
2021-09-30	3355
2021-12-31	3783
2022-03-31	5260
2022-06-30	4300
2022-09-30	4194
2022-12-31	4360
2023-03-31	6167
2023-06-30	6432
2023-09-30	6300