Quarter	US dollars
2004-12-31	38939
2005-03-31	43630
2005-06-30	179919
2005-09-30	231824
2005-12-31	220688
2006-03-31	281756
2006-06-30	345440
2006-09-30	404286
2006-12-31	433477
2007-03-31	470286
2007-06-30	526851
2007-09-30	595724
2007-12-31	628818
2008-03-31	690567
2008-06-30	638305
2008-09-30	575269
2008-12-31	467144
2009-03-31	468060
2009-06-30	416568
2009-09-30	346159
2009-12-31	320743
2010-03-31	308639
2010-06-30	311352
2010-09-30	383656
2010-12-31	517465
2011-03-31	500924
2011-06-30	517045
2011-09-30	593736
2011-12-31	549240
2012-03-31	502678
2012-06-30	499350
2012-09-30	522047
2012-12-31	575503
2013-03-31	1286040
2013-06-30	1250836
2013-09-30	1223598
2013-12-31	1104216
2014-03-31	1014749
2014-06-30	888772
2014-09-30	823232
2014-12-31	688027
2015-03-31	638277
2015-06-30	603322
2015-09-30	571543
2015-12-31	514646
2016-03-31	537759
2016-06-30	492419
2016-09-30	481850
2016-12-31	418101
2017-03-31	422326
2017-06-30	385598
2017-09-30	356003
2017-12-31	338261
2018-03-31	314481
2018-06-30	268627
2018-09-30	278384
2018-12-31	261955
2019-03-31	274803
2019-06-30	352955
2019-09-30	350896
2019-12-31	365132
2020-03-31	361453
2020-06-30	333232
2020-09-30	353868
2020-12-31	337941
2021-03-31	379905
2021-06-30	376320
2021-09-30	441339
2021-12-31	469320
2022-03-31	561347
2022-06-30	495678
2022-09-30	525776
2022-12-31	522684
2023-03-31	587548
2023-06-30	568976
2023-09-30	562793