Quarter	US dollars
2004-12-31	2722
2005-03-31	2941
2005-06-30	3004
2005-09-30	3982
2005-12-31	2704
2006-03-31	2957
2006-06-30	3405
2006-09-30	4878
2006-12-31	4986
2007-03-31	6833
2007-06-30	8762
2007-09-30	9769
2007-12-31	9871
2008-03-31	16957
2008-06-30	16154
2008-09-30	14162
2008-12-31	7005
2009-03-31	9648
2009-06-30	8404
2009-09-30	7382
2009-12-31	7751
2010-03-31	7009
2010-06-30	7034
2010-09-30	6387
2010-12-31	7114
2011-03-31	8073
2011-06-30	20110
2011-09-30	21169
2011-12-31	13358
2012-03-31	11036
2012-06-30	9608
2012-09-30	9738
2012-12-31	10742
2013-03-31	12104
2013-06-30	13119
2013-09-30	14058
2013-12-31	14250
2014-03-31	13969
2014-06-30	14138
2014-09-30	13281
2014-12-31	11818
2015-03-31	6962
2015-06-30	8692
2015-09-30	8508
2015-12-31	5631
2016-03-31	6026
2016-06-30	3945
2016-09-30	3336
2016-12-31	2862
2017-03-31	2783
2017-06-30	6200
2017-09-30	4523
2017-12-31	4907
2018-03-31	4136
2018-06-30	4691
2018-09-30	4692
2018-12-31	4935
2019-03-31	6033
2019-06-30	6271
2019-09-30	5527
2019-12-31	4543
2020-03-31	5270
2020-06-30	5534
2020-09-30	5190
2020-12-31	3889
2021-03-31	6917
2021-06-30	5760
2021-09-30	6471
2021-12-31	6070
2022-03-31	7866
2022-06-30	5941
2022-09-30	6771
2022-12-31	6107
2023-03-31	5417
2023-06-30	6017
2023-09-30	6775