Quarter	US dollars
2004-12-31	48115
2005-03-31	59185
2005-06-30	47955
2005-09-30	67943
2005-12-31	48191
2006-03-31	59117
2006-06-30	54877
2006-09-30	71914
2006-12-31	63348
2007-03-31	71703
2007-06-30	74915
2007-09-30	88061
2007-12-31	90242
2008-03-31	126884
2008-06-30	117593
2008-09-30	133346
2008-12-31	95379
2009-03-31	91549
2009-06-30	91336
2009-09-30	99592
2009-12-31	102937
2010-03-31	116807
2010-06-30	127695
2010-09-30	142520
2010-12-31	147447
2011-03-31	163389
2011-06-30	174667
2011-09-30	180492
2011-12-31	168908
2012-03-31	183532
2012-06-30	187719
2012-09-30	185255
2012-12-31	185292
2013-03-31	209571
2013-06-30	204521
2013-09-30	211265
2013-12-31	203385
2014-03-31	218415
2014-06-30	208445
2014-09-30	202379
2014-12-31	179803
2015-03-31	178342
2015-06-30	168310
2015-09-30	157397
2015-12-31	147919
2016-03-31	144201
2016-06-30	152222
2016-09-30	155384
2016-12-31	153106
2017-03-31	156649
2017-06-30	186497
2017-09-30	190755
2017-12-31	200441
2018-03-31	200619
2018-06-30	192352
2018-09-30	188208
2018-12-31	181878
2019-03-31	186227
2019-06-30	195582
2019-09-30	190670
2019-12-31	176783
2020-03-31	187748
2020-06-30	172614
2020-09-30	161024
2020-12-31	187457
2021-03-31	197763
2021-06-30	201283
2021-09-30	200972
2021-12-31	230540
2022-03-31	216125
2022-06-30	206775
2022-09-30	232335
2022-12-31	222050
2023-03-31	215653
2023-06-30	213854
2023-09-30	210443