Quarter	US dollars
2004-12-31	553
2005-03-31	554
2005-06-30	554
2005-09-30	379
2005-12-31	608
2006-03-31	612
2006-06-30	614
2006-09-30	615
2006-12-31	632
2007-03-31	624
2007-06-30	656
2007-09-30	725
2007-12-31	713
2008-03-31	759
2008-06-30	794
2008-09-30	855
2008-12-31	794
2009-03-31	777
2009-06-30	818
2009-09-30	408
2009-12-31	413
2010-03-31	408
2010-06-30	413
2010-09-30	449
2010-12-31	467
2011-03-31	486
2011-06-30	519
2011-09-30	517
2011-12-31	510
2012-03-31	602
2012-06-30	549
2012-09-30	552
2012-12-31	601
2013-03-31	581
2013-06-30	575
2013-09-30	646
2013-12-31	641
2014-03-31	619
2014-06-30	602
2014-09-30	556
2014-12-31	468
2015-03-31	425
2015-06-30	370
2015-09-30	324
2015-12-31	295
2016-03-31	283
2016-06-30	250
2016-09-30	218
2016-12-31	153
2017-03-31	165
2017-06-30	97
2017-09-30	93
2017-12-31	47
2018-03-31	52
2018-06-30	53
2018-09-30	93
2018-12-31	100
2019-03-31	73
2019-06-30	83
2019-09-30	78
2019-12-31	73
2020-03-31	64
2020-06-30	48
2020-09-30	50
2020-12-31	55
2021-03-31	57
2021-06-30	57
2021-09-30	58
2021-12-31	51
2022-03-31	51
2022-06-30	49
2022-09-30	51
2022-12-31	48
2023-03-31	47
2023-06-30	43
2023-09-30	38