Quarter	US dollars
1999-09-30	119588
1999-12-31	116876
2000-03-31	117100
2000-06-30	119640
2000-09-30	127463
2000-12-31	127414
2001-03-31	131387
2001-06-30	134255
2001-09-30	134898
2001-12-31	126868
2002-03-31	129638
2002-06-30	130658
2002-09-30	129140
2002-12-31	128609
2003-03-31	130893
2003-06-30	131074
2003-09-30	131346
2003-12-31	133628
2004-03-31	139081
2004-06-30	141095
2004-09-30	144837
2004-12-31	145553
2005-03-31	151342
2005-06-30	152312
2005-09-30	152456
2005-12-31	143889
2006-03-31	146038
2006-06-30	147027
2006-09-30	161491
2006-12-31	156621
2007-03-31	171594
2007-06-30	164808
2007-09-30	191236
2007-12-31	167940
2008-03-31	176961
2008-06-30	179002
2008-09-30	190081
2008-12-31	189037
2009-03-31	195147
2009-06-30	222418
2009-09-30	224825
2009-12-31	240526
2010-03-31	233966
2010-06-30	244531
2010-09-30	274268
2010-12-31	279700
2011-03-31	295972
2011-06-30	298725
2011-09-30	302430
2011-12-31	292368
2012-03-31	298995
2012-06-30	301494
2012-09-30	310083
2012-12-31	317413
2013-03-31	327494
2013-06-30	330760
2013-09-30	345616
2013-12-31	353722
2014-03-31	350133
2014-06-30	367462
2014-09-30	372690
2014-12-31	368848
2015-03-31	376805
2015-06-30	383695
2015-09-30	380777
2015-12-31	364170
2016-03-31	377760
2016-06-30	390017
2016-09-30	395786
2016-12-31	398664
2017-03-31	405617
2017-06-30	408122
2017-09-30	419657
2017-12-31	431569
2018-03-31	436411
2018-06-30	454607
2018-09-30	455290
2018-12-31	461458
2019-03-31	454944
2019-06-30	481990
2019-09-30	484866
2019-12-31	488905
2020-03-31	497514
2020-06-30	505618
2020-09-30	519542
2020-12-31	509529
2021-03-31	521540
2021-06-30	535037
2021-09-30	533213
2021-12-31	512206
2022-03-31	536803
2022-06-30	541760
2022-09-30	542048
2022-12-31	532959
2023-03-31	541312
2023-06-30	533344
2023-09-30	528881