Quarter	US dollars
1999-09-30	213679
1999-12-31	209100
2000-03-31	230350
2000-06-30	224303
2000-09-30	222329
2000-12-31	301748
2001-03-31	312704
2001-06-30	305887
2001-09-30	325699
2001-12-31	314649
2002-03-31	314660
2002-06-30	344529
2002-09-30	376437
2002-12-31	374542
2003-03-31	408560
2003-06-30	434756
2003-09-30	463753
2003-12-31	490004
2004-03-31	556173
2004-06-30	564039
2004-09-30	603880
2004-12-31	645808
2005-03-31	713552
2005-06-30	688272
2005-09-30	770963
2005-12-31	679061
2006-03-31	790889
2006-06-30	832554
2006-09-30	888697
2006-12-31	908351
2007-03-31	1043410
2007-06-30	1103209
2007-09-30	1203138
2007-12-31	1157483
2008-03-31	1337747
2008-06-30	1272315
2008-09-30	1177982
2008-12-31	1099456
2009-03-31	1032417
2009-06-30	1083283
2009-09-30	1135250
2009-12-31	1087162
2010-03-31	1138576
2010-06-30	1117027
2010-09-30	1229251
2010-12-31	1097127
2011-03-31	1182615
2011-06-30	1164375
2011-09-30	1196567
2011-12-31	1121105
2012-03-31	1275119
2012-06-30	1193626
2012-09-30	1135669
2012-12-31	1126646
2013-03-31	1036715
2013-06-30	1011011
2013-09-30	996725
2013-12-31	950681
2014-03-31	946481
2014-06-30	906387
2014-09-30	836615
2014-12-31	782008
2015-03-31	731351
2015-06-30	715371
2015-09-30	708001
2015-12-31	684161
2016-03-31	703728
2016-06-30	718003
2016-09-30	710839
2016-12-31	650735
2017-03-31	714013
2017-06-30	790638
2017-09-30	786192
2017-12-31	805550
2018-03-31	816333
2018-06-30	788541
2018-09-30	782615
2018-12-31	730069
2019-03-31	773040
2019-06-30	781492
2019-09-30	770503
2019-12-31	749748
2020-03-31	786634
2020-06-30	831301
2020-09-30	895525
2020-12-31	948394
2021-03-31	934021
2021-06-30	941504
2021-09-30	912903
2021-12-31	888102
2022-03-31	931554
2022-06-30	868840
2022-09-30	823698
2022-12-31	868017
2023-03-31	902688
2023-06-30	943197
2023-09-30	931473