Quarter	US dollars
2004-12-31	101655
2005-03-31	116821
2005-06-30	144834
2005-09-30	176365
2005-12-31	168128
2006-03-31	184370
2006-06-30	194181
2006-09-30	204844
2006-12-31	209925
2007-03-31	227134
2007-06-30	242245
2007-09-30	276964
2007-12-31	289148
2008-03-31	319061
2008-06-30	311437
2008-09-30	300811
2008-12-31	269645
2009-03-31	255116
2009-06-30	264888
2009-09-30	289209
2009-12-31	304831
2010-03-31	344928
2010-06-30	378332
2010-09-30	411894
2010-12-31	430688
2011-03-31	463031
2011-06-30	509632
2011-09-30	495959
2011-12-31	485386
2012-03-31	500498
2012-06-30	494531
2012-09-30	485235
2012-12-31	496755
2013-03-31	525994
2013-06-30	524191
2013-09-30	538457
2013-12-31	536039
2014-03-31	560881
2014-06-30	552748
2014-09-30	547186
2014-12-31	522649
2015-03-31	513292
2015-06-30	490124
2015-09-30	451471
2015-12-31	430385
2016-03-31	432884
2016-06-30	427285
2016-09-30	433306
2016-12-31	413317
2017-03-31	444010
2017-06-30	490988
2017-09-30	492666
2017-12-31	512686
2018-03-31	521661
2018-06-30	504014
2018-09-30	496209
2018-12-31	506098
2019-03-31	523217
2019-06-30	528125
2019-09-30	512620
2019-12-31	517165
2020-03-31	531006
2020-06-30	517000
2020-09-30	517124
2020-12-31	566151
2021-03-31	585906
2021-06-30	601951
2021-09-30	593738
2021-12-31	611040
2022-03-31	595982
2022-06-30	577471
2022-09-30	560834
2022-12-31	570928
2023-03-31	583413
2023-06-30	577231
2023-09-30	578490