Quarter	US dollars
2004-12-31	826
2005-03-31	522
2005-06-30	491
2005-09-30	577
2005-12-31	558
2006-03-31	545
2006-06-30	834
2006-09-30	742
2006-12-31	1027
2007-03-31	1289
2007-06-30	1537
2007-09-30	1500
2007-12-31	1455
2008-03-31	1409
2008-06-30	1347
2008-09-30	1381
2008-12-31	1323
2009-03-31	1538
2009-06-30	1604
2009-09-30	1673
2009-12-31	1865
2010-03-31	3766
2010-06-30	3661
2010-09-30	3783
2010-12-31	4167
2011-03-31	3945
2011-06-30	3781
2011-09-30	3356
2011-12-31	4242
2012-03-31	4133
2012-06-30	4514
2012-09-30	4024
2012-12-31	3560
2013-03-31	3800
2013-06-30	3614
2013-09-30	4152
2013-12-31	4522
2014-03-31	5399
2014-06-30	4974
2014-09-30	5272
2014-12-31	4548
2015-03-31	4695
2015-06-30	4981
2015-09-30	3534
2015-12-31	3182
2016-03-31	3737
2016-06-30	4899
2016-09-30	6212
2016-12-31	5212
2017-03-31	4179
2017-06-30	7186
2017-09-30	4498
2017-12-31	3921
2018-03-31	5363
2018-06-30	5108
2018-09-30	5356
2018-12-31	6148
2019-03-31	5362
2019-06-30	5341
2019-09-30	5036
2019-12-31	4534
2020-03-31	4365
2020-06-30	4353
2020-09-30	4867
2020-12-31	5020
2021-03-31	2830
2021-06-30	2103
2021-09-30	1503
2021-12-31	1687
2022-03-31	1802
2022-06-30	2443
2022-09-30	2059
2022-12-31	4366
2023-03-31	3994
2023-06-30	4085
2023-09-30	3713