Quarter	US dollars
2004-12-31	187325
2005-03-31	184494
2005-06-30	169805
2005-09-30	175571
2005-12-31	164057
2006-03-31	183108
2006-06-30	209983
2006-09-30	213412
2006-12-31	212783
2007-03-31	255859
2007-06-30	274130
2007-09-30	281614
2007-12-31	258369
2008-03-31	276012
2008-06-30	262178
2008-09-30	235141
2008-12-31	212443
2009-03-31	247084
2009-06-30	245449
2009-09-30	275124
2009-12-31	247454
2010-03-31	217107
2010-06-30	183455
2010-09-30	215379
2010-12-31	188269
2011-03-31	209426
2011-06-30	214871
2011-09-30	201665
2011-12-31	180605
2012-03-31	165710
2012-06-30	156836
2012-09-30	153642
2012-12-31	181982
2013-03-31	173022
2013-06-30	190857
2013-09-30	203316
2013-12-31	211631
2014-03-31	213253
2014-06-30	220673
2014-09-30	196713
2014-12-31	189141
2015-03-31	191773
2015-06-30	181594
2015-09-30	182493
2015-12-31	173668
2016-03-31	173199
2016-06-30	150788
2016-09-30	148594
2016-12-31	136678
2017-03-31	136207
2017-06-30	139922
2017-09-30	130511
2017-12-31	121666
2018-03-31	141293
2018-06-30	108836
2018-09-30	121328
2018-12-31	113117
2019-03-31	126993
2019-06-30	128196
2019-09-30	129001
2019-12-31	133539
2020-03-31	107104
2020-06-30	126681
2020-09-30	128625
2020-12-31	141180
2021-03-31	117891
2021-06-30	117529
2021-09-30	112040
2021-12-31	107862
2022-03-31	81750
2022-06-30	71786
2022-09-30	53289
2022-12-31	61436
2023-03-31	56955
2023-06-30	83635
2023-09-30	106245