Quarter	US dollars
2004-12-31	451
2005-03-31	975
2005-06-30	907
2005-09-30	1019
2005-12-31	1243
2006-03-31	1124
2006-06-30	1489
2006-09-30	1502
2006-12-31	1552
2007-03-31	1957
2007-06-30	2155
2007-09-30	2235
2007-12-31	2616
2008-03-31	2902
2008-06-30	2703
2008-09-30	2919
2008-12-31	2510
2009-03-31	2416
2009-06-30	2167
2009-09-30	1940
2009-12-31	2039
2010-03-31	980
2010-06-30	1149
2010-09-30	1605
2010-12-31	2427
2011-03-31	2443
2011-06-30	2556
2011-09-30	2882
2011-12-31	3924
2012-03-31	3824
2012-06-30	3214
2012-09-30	3175
2012-12-31	4749
2013-03-31	7451
2013-06-30	8396
2013-09-30	7512
2013-12-31	7292
2014-03-31	7061
2014-06-30	6107
2014-09-30	6935
2014-12-31	6435
2015-03-31	7262
2015-06-30	7646
2015-09-30	8528
2015-12-31	7947
2016-03-31	8312
2016-06-30	8629
2016-09-30	7886
2016-12-31	7810
2017-03-31	7781
2017-06-30	6602
2017-09-30	6610
2017-12-31	6200
2018-03-31	7074
2018-06-30	7655
2018-09-30	9017
2018-12-31	8726
2019-03-31	8892
2019-06-30	8735
2019-09-30	9927
2019-12-31	9799
2020-03-31	10679
2020-06-30	10432
2020-09-30	10767
2020-12-31	8914
2021-03-31	9274
2021-06-30	8398
2021-09-30	8538
2021-12-31	7651
2022-03-31	8389
2022-06-30	8071
2022-09-30	8640
2022-12-31	8023
2023-03-31	8036
2023-06-30	6723
2023-09-30	6709