Quarter	US dollars
2004-12-31	227808
2005-03-31	227220
2005-06-30	216609
2005-09-30	232631
2005-12-31	234044
2006-03-31	264770
2006-06-30	281336
2006-09-30	302312
2006-12-31	315187
2007-03-31	363364
2007-06-30	418218
2007-09-30	476369
2007-12-31	493648
2008-03-31	550011
2008-06-30	556006
2008-09-30	493850
2008-12-31	499875
2009-03-31	491148
2009-06-30	530176
2009-09-30	514863
2009-12-31	490973
2010-03-31	533417
2010-06-30	568037
2010-09-30	611324
2010-12-31	550693
2011-03-31	581918
2011-06-30	597712
2011-09-30	604507
2011-12-31	606071
2012-03-31	750544
2012-06-30	687626
2012-09-30	631889
2012-12-31	624227
2013-03-31	537769
2013-06-30	502675
2013-09-30	465331
2013-12-31	447608
2014-03-31	431247
2014-06-30	383730
2014-09-30	360026
2014-12-31	327743
2015-03-31	267645
2015-06-30	294974
2015-09-30	293287
2015-12-31	304431
2016-03-31	317538
2016-06-30	384194
2016-09-30	384157
2016-12-31	353335
2017-03-31	391423
2017-06-30	416048
2017-09-30	436543
2017-12-31	454594
2018-03-31	403701
2018-06-30	399940
2018-09-30	429016
2018-12-31	399925
2019-03-31	393627
2019-06-30	332920
2019-09-30	313952
2019-12-31	344807
2020-03-31	335048
2020-06-30	371414
2020-09-30	415834
2020-12-31	407217
2021-03-31	418535
2021-06-30	489450
2021-09-30	469111
2021-12-31	465342
2022-03-31	484577
2022-06-30	462402
2022-09-30	427336
2022-12-31	442276
2023-03-31	445895
2023-06-30	456471
2023-09-30	431536