Quarter	US dollars
2004-12-31	67016
2005-03-31	68232
2005-06-30	74885
2005-09-30	67151
2005-12-31	62824
2006-03-31	67923
2006-06-30	76972
2006-09-30	71421
2006-12-31	70401
2007-03-31	84171
2007-06-30	78406
2007-09-30	87732
2007-12-31	90662
2008-03-31	100154
2008-06-30	91433
2008-09-30	86473
2008-12-31	74839
2009-03-31	80900
2009-06-30	81657
2009-09-30	81966
2009-12-31	76642
2010-03-31	68600
2010-06-30	66808
2010-09-30	66220
2010-12-31	66387
2011-03-31	68863
2011-06-30	73720
2011-09-30	61268
2011-12-31	59356
2012-03-31	57623
2012-06-30	50423
2012-09-30	46454
2012-12-31	49227
2013-03-31	45851
2013-06-30	45892
2013-09-30	45630
2013-12-31	47921
2014-03-31	47528
2014-06-30	47092
2014-09-30	43040
2014-12-31	38920
2015-03-31	38155
2015-06-30	32482
2015-09-30	35574
2015-12-31	32892
2016-03-31	35367
2016-06-30	28092
2016-09-30	24033
2016-12-31	21271
2017-03-31	25173
2017-06-30	26637
2017-09-30	27087
2017-12-31	23447
2018-03-31	30934
2018-06-30	27264
2018-09-30	29676
2018-12-31	29383
2019-03-31	31182
2019-06-30	32631
2019-09-30	31326
2019-12-31	29479
2020-03-31	26400
2020-06-30	23875
2020-09-30	24619
2020-12-31	22278
2021-03-31	19494
2021-06-30	20698
2021-09-30	17686
2021-12-31	16866
2022-03-31	17147
2022-06-30	18750
2022-09-30	16095
2022-12-31	14073
2023-03-31	13120
2023-06-30	21988
2023-09-30	25897