Quarter	US dollars
2004-12-31	25706
2005-03-31	32176
2005-06-30	23559
2005-09-30	22925
2005-12-31	17399
2006-03-31	18481
2006-06-30	23386
2006-09-30	22573
2006-12-31	21993
2007-03-31	27627
2007-06-30	27251
2007-09-30	27992
2007-12-31	26640
2008-03-31	24577
2008-06-30	25786
2008-09-30	22936
2008-12-31	13196
2009-03-31	17277
2009-06-30	15569
2009-09-30	16052
2009-12-31	14201
2010-03-31	13382
2010-06-30	10300
2010-09-30	10132
2010-12-31	8718
2011-03-31	9188
2011-06-30	8898
2011-09-30	7797
2011-12-31	6914
2012-03-31	3465
2012-06-30	1730
2012-09-30	2392
2012-12-31	2637
2013-03-31	3305
2013-06-30	2911
2013-09-30	2850
2013-12-31	3669
2014-03-31	4760
2014-06-30	5365
2014-09-30	4434
2014-12-31	4979
2015-03-31	5853
2015-06-30	5293
2015-09-30	4123
2015-12-31	3531
2016-03-31	3264
2016-06-30	2709
2016-09-30	2503
2016-12-31	2709
2017-03-31	5304
2017-06-30	6867
2017-09-30	5125
2017-12-31	4129
2018-03-31	5615
2018-06-30	4370
2018-09-30	6996
2018-12-31	5549
2019-03-31	5117
2019-06-30	3537
2019-09-30	3960
2019-12-31	5234
2020-03-31	3155
2020-06-30	2794
2020-09-30	2817
2020-12-31	3302
2021-03-31	3376
2021-06-30	3843
2021-09-30	4597
2021-12-31	3927
2022-03-31	3683
2022-06-30	3767
2022-09-30	3625
2022-12-31	2651
2023-03-31	4009
2023-06-30	9242
2023-09-30	11395