Quarter	US dollars
2004-12-31	2290
2005-03-31	2832
2005-06-30	2481
2005-09-30	3010
2005-12-31	2590
2006-03-31	4385
2006-06-30	5774
2006-09-30	6357
2006-12-31	5875
2007-03-31	8606
2007-06-30	6782
2007-09-30	8795
2007-12-31	9608
2008-03-31	7495
2008-06-30	6080
2008-09-30	9028
2008-12-31	4162
2009-03-31	5851
2009-06-30	8432
2009-09-30	9238
2009-12-31	7131
2010-03-31	10226
2010-06-30	10542
2010-09-30	14498
2010-12-31	13513
2011-03-31	16791
2011-06-30	17305
2011-09-30	13851
2011-12-31	15396
2012-03-31	19599
2012-06-30	15603
2012-09-30	24123
2012-12-31	24040
2013-03-31	29598
2013-06-30	21341
2013-09-30	18681
2013-12-31	15921
2014-03-31	10366
2014-06-30	11019
2014-09-30	12433
2014-12-31	11389
2015-03-31	9321
2015-06-30	11136
2015-09-30	10953
2015-12-31	7658
2016-03-31	8341
2016-06-30	13146
2016-09-30	15487
2016-12-31	12593
2017-03-31	14721
2017-06-30	13355
2017-09-30	12706
2017-12-31	13975
2018-03-31	13663
2018-06-30	7049
2018-09-30	6896
2018-12-31	7077
2019-03-31	8208
2019-06-30	7372
2019-09-30	6898
2019-12-31	8885
2020-03-31	5562
2020-06-30	6569
2020-09-30	6755
2020-12-31	9797
2021-03-31	6948
2021-06-30	6383
2021-09-30	6808
2021-12-31	7678
2022-03-31	10286
2022-06-30	11781
2022-09-30	13928
2022-12-31	8904
2023-03-31	7587
2023-06-30	8315
2023-09-30	10542