Quarter	US dollars
2004-12-31	581933
2005-03-31	667169
2005-06-30	621065
2005-09-30	693269
2005-12-31	620143
2006-03-31	692773
2006-06-30	701491
2006-09-30	730548
2006-12-31	748164
2007-03-31	855423
2007-06-30	872156
2007-09-30	981187
2007-12-31	881399
2008-03-31	1029404
2008-06-30	864692
2008-09-30	881598
2008-12-31	702245
2009-03-31	599997
2009-06-30	639639
2009-09-30	610547
2009-12-31	607867
2010-03-31	668675
2010-06-30	619816
2010-09-30	676572
2010-12-31	605509
2011-03-31	619644
2011-06-30	608524
2011-09-30	554793
2011-12-31	455305
2012-03-31	508188
2012-06-30	439519
2012-09-30	447135
2012-12-31	407201
2013-03-31	424816
2013-06-30	454026
2013-09-30	436943
2013-12-31	380982
2014-03-31	432781
2014-06-30	459068
2014-09-30	413962
2014-12-31	366117
2015-03-31	362092
2015-06-30	325414
2015-09-30	327071
2015-12-31	282538
2016-03-31	291019
2016-06-30	319669
2016-09-30	271903
2016-12-31	267452
2017-03-31	301475
2017-06-30	310699
2017-09-30	307870
2017-12-31	305098
2018-03-31	335866
2018-06-30	325360
2018-09-30	323756
2018-12-31	294078
2019-03-31	324315
2019-06-30	319258
2019-09-30	325149
2019-12-31	304204
2020-03-31	381191
2020-06-30	350531
2020-09-30	381984
2020-12-31	383493
2021-03-31	402553
2021-06-30	403962
2021-09-30	416231
2021-12-31	387167
2022-03-31	433459
2022-06-30	410103
2022-09-30	422727
2022-12-31	429692
2023-03-31	466467
2023-06-30	472543
2023-09-30	458405