Quarter	US dollars
2004-12-31	856
2005-03-31	1096
2005-06-30	1196
2005-09-30	1525
2005-12-31	2529
2006-03-31	3181
2006-06-30	2717
2006-09-30	2688
2006-12-31	3053
2007-03-31	3179
2007-06-30	3455
2007-09-30	4448
2007-12-31	3424
2008-03-31	4132
2008-06-30	3433
2008-09-30	3295
2008-12-31	3453
2009-03-31	3495
2009-06-30	3572
2009-09-30	3317
2009-12-31	2400
2010-03-31	2330
2010-06-30	2385
2010-09-30	2702
2010-12-31	7565
2011-03-31	7717
2011-06-30	9409
2011-09-30	24570
2011-12-31	23397
2012-03-31	30226
2012-06-30	19291
2012-09-30	31373
2012-12-31	43367
2013-03-31	59901
2013-06-30	59285
2013-09-30	52162
2013-12-31	42255
2014-03-31	51881
2014-06-30	48014
2014-09-30	39077
2014-12-31	31901
2015-03-31	27131
2015-06-30	25415
2015-09-30	22525
2015-12-31	20929
2016-03-31	21847
2016-06-30	19469
2016-09-30	19336
2016-12-31	18370
2017-03-31	18175
2017-06-30	15631
2017-09-30	15642
2017-12-31	15026
2018-03-31	13299
2018-06-30	12004
2018-09-30	10439
2018-12-31	12980
2019-03-31	13756
2019-06-30	13282
2019-09-30	12618
2019-12-31	12797
2020-03-31	11777
2020-06-30	12033
2020-09-30	12866
2020-12-31	13914
2021-03-31	14806
2021-06-30	13395
2021-09-30	13619
2021-12-31	13686
2022-03-31	14193
2022-06-30	12415
2022-09-30	12481
2022-12-31	12726
2023-03-31	13211
2023-06-30	11425
2023-09-30	11360