Quarter	US dollars
2004-12-31	40481
2005-03-31	43916
2005-06-30	49222
2005-09-30	50303
2005-12-31	50719
2006-03-31	54548
2006-06-30	59236
2006-09-30	60814
2006-12-31	72669
2007-03-31	74610
2007-06-30	79636
2007-09-30	85275
2007-12-31	91753
2008-03-31	101345
2008-06-30	109832
2008-09-30	106529
2008-12-31	89156
2009-03-31	86902
2009-06-30	96922
2009-09-30	103657
2009-12-31	102874
2010-03-31	115004
2010-06-30	116624
2010-09-30	136345
2010-12-31	142929
2011-03-31	151533
2011-06-30	174548
2011-09-30	153681
2011-12-31	151779
2012-03-31	161036
2012-06-30	148065
2012-09-30	150142
2012-12-31	149341
2013-03-31	145442
2013-06-30	131659
2013-09-30	142209
2013-12-31	133834
2014-03-31	135887
2014-06-30	136918
2014-09-30	134908
2014-12-31	131694
2015-03-31	124550
2015-06-30	116111
2015-09-30	99987
2015-12-31	96449
2016-03-31	103000
2016-06-30	100618
2016-09-30	60213
2016-12-31	54433
2017-03-31	58869
2017-06-30	57221
2017-09-30	60368
2017-12-31	58438
2018-03-31	64273
2018-06-30	59979
2018-09-30	63246
2018-12-31	66076
2019-03-31	69998
2019-06-30	68405
2019-09-30	68983
2019-12-31	66588
2020-03-31	56543
2020-06-30	56687
2020-09-30	52340
2020-12-31	59787
2021-03-31	56915
2021-06-30	58418
2021-09-30	57236
2021-12-31	71409
2022-03-31	69208
2022-06-30	56290
2022-09-30	75132
2022-12-31	79219
2023-03-31	83800
2023-06-30	85990
2023-09-30	70869