Quarter	US dollars
2004-12-31	8759
2005-03-31	10210
2005-06-30	10379
2005-09-30	11685
2005-12-31	9791
2006-03-31	14112
2006-06-30	14521
2006-09-30	14688
2006-12-31	15865
2007-03-31	17991
2007-06-30	15654
2007-09-30	23866
2007-12-31	27845
2008-03-31	28260
2008-06-30	25553
2008-09-30	28243
2008-12-31	19316
2009-03-31	17083
2009-06-30	18658
2009-09-30	18869
2009-12-31	19142
2010-03-31	19793
2010-06-30	21921
2010-09-30	21458
2010-12-31	20915
2011-03-31	20799
2011-06-30	23326
2011-09-30	23633
2011-12-31	23832
2012-03-31	28496
2012-06-30	27008
2012-09-30	23668
2012-12-31	21536
2013-03-31	23033
2013-06-30	22159
2013-09-30	26084
2013-12-31	23223
2014-03-31	18194
2014-06-30	19391
2014-09-30	21162
2014-12-31	21850
2015-03-31	24887
2015-06-30	25571
2015-09-30	27810
2015-12-31	25415
2016-03-31	25632
2016-06-30	24164
2016-09-30	24029
2016-12-31	23394
2017-03-31	19548
2017-06-30	23001
2017-09-30	25265
2017-12-31	24295
2018-03-31	28291
2018-06-30	26257
2018-09-30	28594
2018-12-31	28763
2019-03-31	31884
2019-06-30	32889
2019-09-30	33980
2019-12-31	32641
2020-03-31	33661
2020-06-30	32526
2020-09-30	30917
2020-12-31	36717
2021-03-31	34796
2021-06-30	35887
2021-09-30	35590
2021-12-31	37474
2022-03-31	41187
2022-06-30	41826
2022-09-30	42147
2022-12-31	42250
2023-03-31	42403
2023-06-30	42748
2023-09-30	43458