Quarter	US dollars
2004-12-31	39072
2005-03-31	49612
2005-06-30	48353
2005-09-30	50883
2005-12-31	47322
2006-03-31	65953
2006-06-30	68848
2006-09-30	79391
2006-12-31	89781
2007-03-31	112345
2007-06-30	128550
2007-09-30	137993
2007-12-31	131356
2008-03-31	135643
2008-06-30	105519
2008-09-30	100384
2008-12-31	83033
2009-03-31	76684
2009-06-30	104389
2009-09-30	109143
2009-12-31	100680
2010-03-31	135725
2010-06-30	123413
2010-09-30	138880
2010-12-31	121882
2011-03-31	136864
2011-06-30	135705
2011-09-30	130593
2011-12-31	95305
2012-03-31	98892
2012-06-30	95843
2012-09-30	89493
2012-12-31	79482
2013-03-31	101429
2013-06-30	105317
2013-09-30	90882
2013-12-31	78908
2014-03-31	88799
2014-06-30	77708
2014-09-30	75081
2014-12-31	64630
2015-03-31	53621
2015-06-30	49235
2015-09-30	48304
2015-12-31	41093
2016-03-31	40000
2016-06-30	40991
2016-09-30	38277
2016-12-31	31075
2017-03-31	43601
2017-06-30	77481
2017-09-30	76970
2017-12-31	65694
2018-03-31	81836
2018-06-30	80903
2018-09-30	76755
2018-12-31	64545
2019-03-31	104134
2019-06-30	105875
2019-09-30	111082
2019-12-31	87463
2020-03-31	109449
2020-06-30	116595
2020-09-30	142320
2020-12-31	141450
2021-03-31	143190
2021-06-30	152102
2021-09-30	166154
2021-12-31	140009
2022-03-31	172974
2022-06-30	153056
2022-09-30	157508
2022-12-31	185950
2023-03-31	186375
2023-06-30	189326
2023-09-30	183821