Quarter	US dollars
2004-12-31	19
2005-03-31	21
2005-06-30	27
2005-09-30	34
2005-12-31	36
2006-03-31	47
2006-06-30	55
2006-09-30	69
2006-12-31	84
2007-03-31	92
2007-06-30	104
2007-09-30	128
2007-12-31	165
2008-03-31	189
2008-06-30	205
2008-09-30	230
2008-12-31	234
2009-03-31	218
2009-06-30	207
2009-09-30	190
2009-12-31	184
2010-03-31	184
2010-06-30	206
2010-09-30	244
2010-12-31	268
2011-03-31	279
2011-06-30	334
2011-09-30	360
2011-12-31	315
2012-03-31	321
2012-06-30	337
2012-09-30	365
2012-12-31	351
2013-03-31	360
2013-06-30	367
2013-09-30	355
2013-12-31	410
2014-03-31	420
2014-06-30	445
2014-09-30	490
2014-12-31	501
2015-03-31	494
2015-06-30	503
2015-09-30	515
2015-12-31	513
2016-03-31	502
2016-06-30	497
2016-09-30	520
2016-12-31	461
2017-03-31	467
2017-06-30	459
2017-09-30	468
2017-12-31	435
2018-03-31	411
2018-06-30	371
2018-09-30	406
2018-12-31	392
2019-03-31	400
2019-06-30	383
2019-09-30	397
2019-12-31	395
2020-03-31	432
2020-06-30	436
2020-09-30	450
2020-12-31	438
2021-03-31	419
2021-06-30	466
2021-09-30	463
2021-12-31	458
2022-03-31	475
2022-06-30	502
2022-09-30	504
2022-12-31	521
2023-03-31	558
2023-06-30	562
2023-09-30	557