Quarter	US dollars
2004-12-31	58768
2005-03-31	61164
2005-06-30	90597
2005-09-30	100519
2005-12-31	106250
2006-03-31	111579
2006-06-30	113799
2006-09-30	116424
2006-12-31	126737
2007-03-31	134298
2007-06-30	140145
2007-09-30	161256
2007-12-31	169515
2008-03-31	175441
2008-06-30	175409
2008-09-30	173167
2008-12-31	168235
2009-03-31	158782
2009-06-30	157818
2009-09-30	168787
2009-12-31	175564
2010-03-31	187593
2010-06-30	213602
2010-09-30	230288
2010-12-31	238618
2011-03-31	247606
2011-06-30	258404
2011-09-30	249418
2011-12-31	244975
2012-03-31	250831
2012-06-30	251073
2012-09-30	256386
2012-12-31	259568
2013-03-31	254915
2013-06-30	252669
2013-09-30	261719
2013-12-31	263270
2014-03-31	265217
2014-06-30	269615
2014-09-30	269132
2014-12-31	267735
2015-03-31	265583
2015-06-30	260952
2015-09-30	242625
2015-12-31	232707
2016-03-31	236624
2016-06-30	235512
2016-09-30	234477
2016-12-31	221105
2017-03-31	232965
2017-06-30	258379
2017-09-30	263830
2017-12-31	270097
2018-03-31	274993
2018-06-30	265416
2018-09-30	259052
2018-12-31	260954
2019-03-31	272377
2019-06-30	277996
2019-09-30	278067
2019-12-31	284732
2020-03-31	276974
2020-06-30	274994
2020-09-30	276963
2020-12-31	298333
2021-03-31	296922
2021-06-30	311887
2021-09-30	307108
2021-12-31	317324
2022-03-31	311889
2022-06-30	308752
2022-09-30	294299
2022-12-31	302527
2023-03-31	297698
2023-06-30	294301
2023-09-30	288414