Quarter	US dollars
1999-03-31	98390
1999-06-30	103623
1999-09-30	94319
1999-12-31	96520
2000-03-31	111789
2000-06-30	113633
2000-09-30	113226
2000-12-31	117617
2001-03-31	154062
2001-06-30	144937
2001-09-30	148163
2001-12-31	146013
2002-03-31	161040
2002-06-30	153131
2002-09-30	171486
2002-12-31	165174
2003-03-31	194169
2003-06-30	205263
2003-09-30	221580
2003-12-31	227761
2004-03-31	275222
2004-06-30	252946
2004-09-30	277273
2004-12-31	294116
2005-03-31	337706
2005-06-30	298040
2005-09-30	328541
2005-12-31	324324
2006-03-31	384011
2006-06-30	413996
2006-09-30	462121
2006-12-31	386292
2007-03-31	454523
2007-06-30	519714
2007-09-30	554355
2007-12-31	548017
2008-03-31	543804
2008-06-30	649777
2008-09-30	649779
2008-12-31	446748
2009-03-31	490346
2009-06-30	478910
2009-09-30	523074
2009-12-31	490973
2010-03-31	532508
2010-06-30	552509
2010-09-30	587385
2010-12-31	616447
2011-03-31	676012
2011-06-30	700804
2011-09-30	641051
2011-12-31	622755
2012-03-31	689397
2012-06-30	658542
2012-09-30	676524
2012-12-31	666575
2013-03-31	667839
2013-06-30	751388
2013-09-30	701012
2013-12-31	614237
2014-03-31	652199
2014-06-30	615198
2014-09-30	610512
2014-12-31	588691
2015-03-31	560634
2015-06-30	532670
2015-09-30	528859
2015-12-31	478923
2016-03-31	453392
2016-06-30	512067
2016-09-30	503758
2016-12-31	479461
2017-03-31	529444
2017-06-30	567704
2017-09-30	611774
2017-12-31	718747
2018-03-31	748630
2018-06-30	665872
2018-09-30	634983
2018-12-31	735869
2019-03-31	675767
2019-06-30	617829
2019-09-30	646390
2019-12-31	681173
2020-03-31	785457
2020-06-30	673274
2020-09-30	745133
2020-12-31	829592
2021-03-31	805254
2021-06-30	785691
2021-09-30	777670
2021-12-31	812098
2022-03-31	827523
2022-06-30	810239
2022-09-30	787083
2022-12-31	795861
2023-03-31	797307
2023-06-30	768330
2023-09-30	791118