Quarter	US dollars
2004-12-31	546555
2005-03-31	574678
2005-06-30	542081
2005-09-30	591761
2005-12-31	647131
2006-03-31	651010
2006-06-30	692282
2006-09-30	671162
2006-12-31	756232
2007-03-31	794864
2007-06-30	839040
2007-09-30	851702
2007-12-31	814366
2008-03-31	834917
2008-06-30	824869
2008-09-30	774162
2008-12-31	649886
2009-03-31	617627
2009-06-30	615539
2009-09-30	569408
2009-12-31	554204
2010-03-31	415963
2010-06-30	426936
2010-09-30	452107
2010-12-31	447581
2011-03-31	426469
2011-06-30	420825
2011-09-30	404811
2011-12-31	409775
2012-03-31	386350
2012-06-30	369110
2012-09-30	411297
2012-12-31	479139
2013-03-31	472076
2013-06-30	479658
2013-09-30	495998
2013-12-31	478436
2014-03-31	519479
2014-06-30	524921
2014-09-30	515822
2014-12-31	522060
2015-03-31	565363
2015-06-30	574055
2015-09-30	512429
2015-12-31	529004
2016-03-31	527037
2016-06-30	495989
2016-09-30	511001
2016-12-31	503866
2017-03-31	518019
2017-06-30	545416
2017-09-30	554438
2017-12-31	676151
2018-03-31	698973
2018-06-30	696221
2018-09-30	736861
2018-12-31	783498
2019-03-31	803740
2019-06-30	814407
2019-09-30	817543
2019-12-31	789548
2020-03-31	759369
2020-06-30	786705
2020-09-30	815192
2020-12-31	821017
2021-03-31	847713
2021-06-30	847593
2021-09-30	834282
2021-12-31	809946
2022-03-31	838426
2022-06-30	857840
2022-09-30	812153
2022-12-31	829238
2023-03-31	839450
2023-06-30	860587
2023-09-30	870976