Quarter	US dollars
2004-12-31	40347
2005-03-31	47404
2005-06-30	46524
2005-09-30	52834
2005-12-31	51766
2006-03-31	61018
2006-06-30	59415
2006-09-30	60754
2006-12-31	64205
2007-03-31	51714
2007-06-30	61225
2007-09-30	90383
2007-12-31	82417
2008-03-31	80227
2008-06-30	75413
2008-09-30	88717
2008-12-31	76321
2009-03-31	71826
2009-06-30	66473
2009-09-30	68413
2009-12-31	60673
2010-03-31	65582
2010-06-30	68381
2010-09-30	62910
2010-12-31	63990
2011-03-31	66220
2011-06-30	52726
2011-09-30	48966
2011-12-31	52434
2012-03-31	48335
2012-06-30	50642
2012-09-30	47870
2012-12-31	44819
2013-03-31	44155
2013-06-30	39013
2013-09-30	39543
2013-12-31	40335
2014-03-31	40445
2014-06-30	46468
2014-09-30	50134
2014-12-31	56871
2015-03-31	56585
2015-06-30	51492
2015-09-30	59390
2015-12-31	51995
2016-03-31	53143
2016-06-30	59145
2016-09-30	55213
2016-12-31	57193
2017-03-31	62073
2017-06-30	65005
2017-09-30	66078
2017-12-31	68928
2018-03-31	43525
2018-06-30	40678
2018-09-30	44329
2018-12-31	38560
2019-03-31	38440
2019-06-30	44175
2019-09-30	48958
2019-12-31	53824
2020-03-31	57500
2020-06-30	43223
2020-09-30	34364
2020-12-31	33739
2021-03-31	38007
2021-06-30	35314
2021-09-30	34663
2021-12-31	52765
2022-03-31	45109
2022-06-30	41719
2022-09-30	28384
2022-12-31	27838
2023-03-31	35352
2023-06-30	35595
2023-09-30	37998