Quarter	US dollars
2004-12-31	21691
2005-03-31	30432
2005-06-30	31704
2005-09-30	43564
2005-12-31	24832
2006-03-31	32029
2006-06-30	34068
2006-09-30	38950
2006-12-31	30774
2007-03-31	34760
2007-06-30	48715
2007-09-30	45703
2007-12-31	59422
2008-03-31	66772
2008-06-30	62433
2008-09-30	61750
2008-12-31	50703
2009-03-31	51540
2009-06-30	60713
2009-09-30	64901
2009-12-31	68558
2010-03-31	80732
2010-06-30	86277
2010-09-30	94558
2010-12-31	91172
2011-03-31	108749
2011-06-30	130225
2011-09-30	122848
2011-12-31	120163
2012-03-31	115857
2012-06-30	108569
2012-09-30	103491
2012-12-31	115789
2013-03-31	127414
2013-06-30	128361
2013-09-30	123042
2013-12-31	128380
2014-03-31	130978
2014-06-30	128414
2014-09-30	131063
2014-12-31	127653
2015-03-31	117851
2015-06-30	111154
2015-09-30	106670
2015-12-31	100471
2016-03-31	104033
2016-06-30	103164
2016-09-30	110153
2016-12-31	106469
2017-03-31	116206
2017-06-30	141895
2017-09-30	134605
2017-12-31	152394
2018-03-31	153449
2018-06-30	143884
2018-09-30	141740
2018-12-31	147878
2019-03-31	150735
2019-06-30	151106
2019-09-30	143029
2019-12-31	147293
2020-03-31	154290
2020-06-30	155643
2020-09-30	152596
2020-12-31	173973
2021-03-31	185805
2021-06-30	189353
2021-09-30	187246
2021-12-31	190334
2022-03-31	184238
2022-06-30	171603
2022-09-30	164007
2022-12-31	169069
2023-03-31	182038
2023-06-30	173085
2023-09-30	176474