Quarter	US dollars
2004-12-31	42485
2005-03-31	46426
2005-06-30	47553
2005-09-30	41114
2005-12-31	56416
2006-03-31	51903
2006-06-30	55904
2006-09-30	49967
2006-12-31	50990
2007-03-31	65319
2007-06-30	88657
2007-09-30	82111
2007-12-31	63002
2008-03-31	91620
2008-06-30	77972
2008-09-30	61741
2008-12-31	54870
2009-03-31	53611
2009-06-30	68021
2009-09-30	65407
2009-12-31	80540
2010-03-31	78172
2010-06-30	127337
2010-09-30	132741
2010-12-31	133057
2011-03-31	150217
2011-06-30	160485
2011-09-30	140457
2011-12-31	126717
2012-03-31	124148
2012-06-30	114067
2012-09-30	106546
2012-12-31	86130
2013-03-31	80449
2013-06-30	92071
2013-09-30	88853
2013-12-31	80303
2014-03-31	96192
2014-06-30	103989
2014-09-30	117839
2014-12-31	110100
2015-03-31	102787
2015-06-30	101208
2015-09-30	99349
2015-12-31	92425
2016-03-31	90597
2016-06-30	81651
2016-09-30	81665
2016-12-31	78758
2017-03-31	85730
2017-06-30	100904
2017-09-30	100549
2017-12-31	105498
2018-03-31	111477
2018-06-30	103489
2018-09-30	90259
2018-12-31	98067
2019-03-31	111625
2019-06-30	115242
2019-09-30	108717
2019-12-31	108412
2020-03-31	118906
2020-06-30	131148
2020-09-30	101645
2020-12-31	125176
2021-03-31	113523
2021-06-30	120448
2021-09-30	112176
2021-12-31	118850
2022-03-31	124893
2022-06-30	118517
2022-09-30	111917
2022-12-31	102750
2023-03-31	135386
2023-06-30	138326
2023-09-30	140062