Quarter	US dollars
2004-12-31	9778
2005-03-31	10155
2005-06-30	10016
2005-09-30	12116
2005-12-31	10078
2006-03-31	14955
2006-06-30	14109
2006-09-30	14303
2006-12-31	15625
2007-03-31	17881
2007-06-30	15513
2007-09-30	22831
2007-12-31	26756
2008-03-31	28121
2008-06-30	24970
2008-09-30	27589
2008-12-31	17938
2009-03-31	15509
2009-06-30	16871
2009-09-30	17284
2009-12-31	17359
2010-03-31	18017
2010-06-30	20137
2010-09-30	21624
2010-12-31	21321
2011-03-31	20228
2011-06-30	23150
2011-09-30	23822
2011-12-31	23502
2012-03-31	27492
2012-06-30	26029
2012-09-30	24005
2012-12-31	21468
2013-03-31	22362
2013-06-30	21059
2013-09-30	25371
2013-12-31	22690
2014-03-31	18197
2014-06-30	19460
2014-09-30	20918
2014-12-31	21193
2015-03-31	24166
2015-06-30	25354
2015-09-30	28657
2015-12-31	25035
2016-03-31	24359
2016-06-30	24447
2016-09-30	23289
2016-12-31	22462
2017-03-31	18738
2017-06-30	21400
2017-09-30	23494
2017-12-31	23028
2018-03-31	26588
2018-06-30	24737
2018-09-30	27423
2018-12-31	26371
2019-03-31	29848
2019-06-30	30621
2019-09-30	31241
2019-12-31	29584
2020-03-31	30501
2020-06-30	28815
2020-09-30	28495
2020-12-31	34174
2021-03-31	32502
2021-06-30	33504
2021-09-30	33029
2021-12-31	34795
2022-03-31	39214
2022-06-30	39980
2022-09-30	40252
2022-12-31	40457
2023-03-31	40786
2023-06-30	41179
2023-09-30	41276