Quarter	US dollars
2004-12-31	1173
2005-03-31	1614
2005-06-30	1606
2005-09-30	1592
2005-12-31	1747
2006-03-31	1821
2006-06-30	2190
2006-09-30	2036
2006-12-31	2072
2007-03-31	2193
2007-06-30	2273
2007-09-30	2447
2007-12-31	2813
2008-03-31	3136
2008-06-30	4249
2008-09-30	3737
2008-12-31	4691
2009-03-31	4617
2009-06-30	5126
2009-09-30	5498
2009-12-31	6023
2010-03-31	6143
2010-06-30	6670
2010-09-30	8104
2010-12-31	6966
2011-03-31	7922
2011-06-30	9799
2011-09-30	8903
2011-12-31	8848
2012-03-31	10899
2012-06-30	11018
2012-09-30	9123
2012-12-31	10522
2013-03-31	12918
2013-06-30	11533
2013-09-30	14471
2013-12-31	14360
2014-03-31	16201
2014-06-30	18061
2014-09-30	17358
2014-12-31	15748
2015-03-31	14880
2015-06-30	13511
2015-09-30	12514
2015-12-31	11774
2016-03-31	11501
2016-06-30	12034
2016-09-30	7750
2016-12-31	6367
2017-03-31	6394
2017-06-30	2986
2017-09-30	3433
2017-12-31	4238
2018-03-31	3531
2018-06-30	3524
2018-09-30	3495
2018-12-31	3805
2019-03-31	4069
2019-06-30	3358
2019-09-30	3839
2019-12-31	4567
2020-03-31	4272
2020-06-30	3835
2020-09-30	4131
2020-12-31	5405
2021-03-31	8256
2021-06-30	7113
2021-09-30	7771
2021-12-31	8228
2022-03-31	9341
2022-06-30	7497
2022-09-30	8018
2022-12-31	8232
2023-03-31	9951
2023-06-30	9635
2023-09-30	8686