Quarter	US dollars
2004-12-31	2861
2005-03-31	3658
2005-06-30	2992
2005-09-30	2489
2005-12-31	2877
2006-03-31	3814
2006-06-30	3889
2006-09-30	3849
2006-12-31	4262
2007-03-31	4499
2007-06-30	4304
2007-09-30	6126
2007-12-31	6409
2008-03-31	7441
2008-06-30	7825
2008-09-30	6503
2008-12-31	6919
2009-03-31	6654
2009-06-30	7353
2009-09-30	5972
2009-12-31	9106
2010-03-31	8190
2010-06-30	12834
2010-09-30	13705
2010-12-31	9269
2011-03-31	9666
2011-06-30	9195
2011-09-30	7465
2011-12-31	8349
2012-03-31	8790
2012-06-30	8634
2012-09-30	10818
2012-12-31	8692
2013-03-31	9274
2013-06-30	8891
2013-09-30	8410
2013-12-31	7421
2014-03-31	15004
2014-06-30	14035
2014-09-30	16298
2014-12-31	15755
2015-03-31	14452
2015-06-30	12891
2015-09-30	13454
2015-12-31	12673
2016-03-31	14377
2016-06-30	14330
2016-09-30	14416
2016-12-31	12221
2017-03-31	12868
2017-06-30	15096
2017-09-30	14039
2017-12-31	13922
2018-03-31	14802
2018-06-30	13231
2018-09-30	13108
2018-12-31	12217
2019-03-31	13481
2019-06-30	13960
2019-09-30	13436
2019-12-31	14009
2020-03-31	15690
2020-06-30	15413
2020-09-30	10247
2020-12-31	10626
2021-03-31	10423
2021-06-30	9979
2021-09-30	9758
2021-12-31	11137
2022-03-31	10569
2022-06-30	8546
2022-09-30	9193
2022-12-31	9697
2023-03-31	10231
2023-06-30	10950
2023-09-30	10041