Quarter	US dollars
2004-12-31	41007
2005-03-31	45095
2005-06-30	43325
2005-09-30	54810
2005-12-31	59913
2006-03-31	68915
2006-06-30	75959
2006-09-30	80065
2006-12-31	88249
2007-03-31	98100
2007-06-30	91654
2007-09-30	117326
2007-12-31	112990
2008-03-31	137978
2008-06-30	130764
2008-09-30	123893
2008-12-31	94804
2009-03-31	80737
2009-06-30	80710
2009-09-30	88830
2009-12-31	94708
2010-03-31	113924
2010-06-30	119083
2010-09-30	127932
2010-12-31	149895
2011-03-31	161017
2011-06-30	180180
2011-09-30	179391
2011-12-31	179020
2012-03-31	196776
2012-06-30	199145
2012-09-30	187742
2012-12-31	179452
2013-03-31	202531
2013-06-30	205692
2013-09-30	220878
2013-12-31	208021
2014-03-31	222670
2014-06-30	220690
2014-09-30	212384
2014-12-31	193366
2015-03-31	197109
2015-06-30	178604
2015-09-30	161593
2015-12-31	145008
2016-03-31	141727
2016-06-30	136906
2016-09-30	132824
2016-12-31	127672
2017-03-31	130322
2017-06-30	139110
2017-09-30	147317
2017-12-31	140966
2018-03-31	151290
2018-06-30	150461
2018-09-30	148935
2018-12-31	145512
2019-03-31	152153
2019-06-30	150148
2019-09-30	138703
2019-12-31	134583
2020-03-31	145919
2020-06-30	128939
2020-09-30	128456
2020-12-31	139756
2021-03-31	142807
2021-06-30	141172
2021-09-30	136763
2021-12-31	145597
2022-03-31	145827
2022-06-30	146333
2022-09-30	151650
2022-12-31	153490
2023-03-31	156977
2023-06-30	163086
2023-09-30	166616