Quarter	US dollars
2004-12-31	222566
2005-03-31	239984
2005-06-30	238082
2005-09-30	248069
2005-12-31	248063
2006-03-31	267286
2006-06-30	276093
2006-09-30	292902
2006-12-31	312541
2007-03-31	302289
2007-06-30	318883
2007-09-30	370766
2007-12-31	375627
2008-03-31	393145
2008-06-30	398814
2008-09-30	410587
2008-12-31	357476
2009-03-31	353913
2009-06-30	367427
2009-09-30	376976
2009-12-31	376647
2010-03-31	373452
2010-06-30	385031
2010-09-30	415103
2010-12-31	420199
2011-03-31	435067
2011-06-30	441322
2011-09-30	414627
2011-12-31	411442
2012-03-31	422693
2012-06-30	431133
2012-09-30	440824
2012-12-31	430234
2013-03-31	431277
2013-06-30	426687
2013-09-30	442365
2013-12-31	443707
2014-03-31	444507
2014-06-30	472021
2014-09-30	463876
2014-12-31	468409
2015-03-31	464868
2015-06-30	461001
2015-09-30	452079
2015-12-31	429360
2016-03-31	426572
2016-06-30	437008
2016-09-30	435402
2016-12-31	439853
2017-03-31	458155
2017-06-30	471442
2017-09-30	480939
2017-12-31	500591
2018-03-31	490939
2018-06-30	496982
2018-09-30	494949
2018-12-31	493186
2019-03-31	508694
2019-06-30	529779
2019-09-30	535480
2019-12-31	553056
2020-03-31	560066
2020-06-30	540513
2020-09-30	550371
2020-12-31	536504
2021-03-31	547627
2021-06-30	573314
2021-09-30	561139
2021-12-31	578223
2022-03-31	573624
2022-06-30	571412
2022-09-30	547008
2022-12-31	548387
2023-03-31	562306
2023-06-30	557421
2023-09-30	553067