Quarter	US dollars
2004-12-31	428
2005-03-31	439
2005-06-30	402
2005-09-30	547
2005-12-31	439
2006-03-31	628
2006-06-30	675
2006-09-30	977
2006-12-31	949
2007-03-31	918
2007-06-30	937
2007-09-30	1192
2007-12-31	1055
2008-03-31	924
2008-06-30	905
2008-09-30	772
2008-12-31	794
2009-03-31	724
2009-06-30	776
2009-09-30	616
2009-12-31	564
2010-03-31	444
2010-06-30	437
2010-09-30	482
2010-12-31	501
2011-03-31	564
2011-06-30	710
2011-09-30	714
2011-12-31	801
2012-03-31	761
2012-06-30	770
2012-09-30	704
2012-12-31	690
2013-03-31	665
2013-06-30	734
2013-09-30	696
2013-12-31	641
2014-03-31	522
2014-06-30	508
2014-09-30	456
2014-12-31	414
2015-03-31	523
2015-06-30	420
2015-09-30	447
2015-12-31	495
2016-03-31	466
2016-06-30	418
2016-09-30	272
2016-12-31	279
2017-03-31	284
2017-06-30	299
2017-09-30	272
2017-12-31	277
2018-03-31	234
2018-06-30	331
2018-09-30	104
2018-12-31	112
2019-03-31	93
2019-06-30	64
2019-09-30	2571
2019-12-31	2568
2020-03-31	2577
2020-06-30	2598
2020-09-30	1756
2020-12-31	1751
2021-03-31	1755
2021-06-30	1752
2021-09-30	898
2021-12-31	875
2022-03-31	529
2022-06-30	553
2022-09-30	606
2022-12-31	530
2023-03-31	525
2023-06-30	559
2023-09-30	595