Quarter	US dollars
2004-12-31	918
2005-03-31	902
2005-06-30	900
2005-09-30	1588
2005-12-31	3996
2006-03-31	6785
2006-06-30	10384
2006-09-30	11871
2006-12-31	15681
2007-03-31	20217
2007-06-30	25349
2007-09-30	34004
2007-12-31	41102
2008-03-31	44834
2008-06-30	51394
2008-09-30	27824
2008-12-31	30182
2009-03-31	27526
2009-06-30	29672
2009-09-30	14512
2009-12-31	15152
2010-03-31	17689
2010-06-30	17957
2010-09-30	32373
2010-12-31	43523
2011-03-31	47025
2011-06-30	46661
2011-09-30	52853
2011-12-31	44673
2012-03-31	46196
2012-06-30	44205
2012-09-30	40999
2012-12-31	45749
2013-03-31	97398
2013-06-30	90879
2013-09-30	85632
2013-12-31	78025
2014-03-31	76437
2014-06-30	68694
2014-09-30	64370
2014-12-31	64317
2015-03-31	67843
2015-06-30	62041
2015-09-30	59823
2015-12-31	56260
2016-03-31	56421
2016-06-30	57703
2016-09-30	50701
2016-12-31	51312
2017-03-31	50663
2017-06-30	49823
2017-09-30	49211
2017-12-31	44090
2018-03-31	38690
2018-06-30	44255
2018-09-30	45998
2018-12-31	45745
2019-03-31	49377
2019-06-30	47029
2019-09-30	47655
2019-12-31	46139
2020-03-31	46735
2020-06-30	35809
2020-09-30	34136
2020-12-31	29400
2021-03-31	30609
2021-06-30	30581
2021-09-30	30273
2021-12-31	28625
2022-03-31	31123
2022-06-30	28742
2022-09-30	32368
2022-12-31	29225
2023-03-31	30587
2023-06-30	26675
2023-09-30	27076