Quarter	US dollars
2004-12-31	3851
2005-03-31	10344
2005-06-30	4607
2005-09-30	13342
2005-12-31	5502
2006-03-31	5316
2006-06-30	8080
2006-09-30	12311
2006-12-31	14235
2007-03-31	11174
2007-06-30	11727
2007-09-30	14963
2007-12-31	10281
2008-03-31	7847
2008-06-30	3186
2008-09-30	7362
2008-12-31	1511
2009-03-31	321
2009-06-30	1838
2009-09-30	1602
2009-12-31	727
2010-03-31	4611
2010-06-30	4438
2010-09-30	2858
2010-12-31	7395
2011-03-31	7045
2011-06-30	3720
2011-09-30	4253
2011-12-31	844
2012-03-31	885
2012-06-30	689
2012-09-30	717
2012-12-31	1567
2013-03-31	2599
2013-06-30	2230
2013-09-30	2589
2013-12-31	4605
2014-03-31	6331
2014-06-30	3171
2014-09-30	1785
2014-12-31	1413
2015-03-31	3167
2015-06-30	3105
2015-09-30	2489
2015-12-31	1522
2016-03-31	2653
2016-06-30	4350
2016-09-30	2635
2016-12-31	3665
2017-03-31	5813
2017-06-30	3848
2017-09-30	5910
2017-12-31	5697
2018-03-31	4839
2018-06-30	3169
2018-09-30	3705
2018-12-31	4274
2019-03-31	4738
2019-06-30	3391
2019-09-30	3097
2019-12-31	3210
2020-03-31	2032
2020-06-30	2122
2020-09-30	2666
2020-12-31	1712
2021-03-31	2010
2021-06-30	1871
2021-09-30	2474
2021-12-31	2947
2022-03-31	3383
2022-06-30	3332
2022-09-30	3631
2022-12-31	3921
2023-03-31	2727
2023-06-30	2581
2023-09-30	1887