Quarter	US dollars
2004-12-31	294
2005-03-31	316
2005-06-30	348
2005-09-30	462
2005-12-31	451
2006-03-31	453
2006-06-30	477
2006-09-30	394
2006-12-31	487
2007-03-31	557
2007-06-30	590
2007-09-30	652
2007-12-31	798
2008-03-31	731
2008-06-30	649
2008-09-30	642
2008-12-31	543
2009-03-31	517
2009-06-30	506
2009-09-30	504
2009-12-31	767
2010-03-31	990
2010-06-30	1076
2010-09-30	9466
2010-12-31	11645
2011-03-31	13029
2011-06-30	12840
2011-09-30	14353
2011-12-31	12919
2012-03-31	13670
2012-06-30	13241
2012-09-30	12257
2012-12-31	13853
2013-03-31	35407
2013-06-30	31227
2013-09-30	29782
2013-12-31	27681
2014-03-31	26050
2014-06-30	21216
2014-09-30	21256
2014-12-31	20556
2015-03-31	21470
2015-06-30	20511
2015-09-30	20015
2015-12-31	18030
2016-03-31	17742
2016-06-30	18451
2016-09-30	18160
2016-12-31	17399
2017-03-31	18253
2017-06-30	18026
2017-09-30	16272
2017-12-31	15366
2018-03-31	14535
2018-06-30	16043
2018-09-30	16666
2018-12-31	16443
2019-03-31	17859
2019-06-30	16903
2019-09-30	17164
2019-12-31	17354
2020-03-31	17282
2020-06-30	15354
2020-09-30	15223
2020-12-31	13672
2021-03-31	13848
2021-06-30	13418
2021-09-30	13199
2021-12-31	12453
2022-03-31	13848
2022-06-30	12513
2022-09-30	13636
2022-12-31	12082
2023-03-31	13058
2023-06-30	11515
2023-09-30	11897