Quarter	US dollars
2004-12-31	234
2005-03-31	110
2005-06-30	65
2005-09-30	60
2005-12-31	112
2006-03-31	113
2006-06-30	80
2006-09-30	103
2006-12-31	74
2007-03-31	114
2007-06-30	112
2007-09-30	104
2007-12-31	275
2008-03-31	223
2008-06-30	223
2008-09-30	296
2008-12-31	122
2009-03-31	272
2009-06-30	282
2009-09-30	288
2009-12-31	292
2010-03-31	299
2010-06-30	186
2010-09-30	106
2010-12-31	127
2011-03-31	24
2011-06-30	117
2011-09-30	50
2011-12-31	165
2012-03-31	110
2012-06-30	88
2012-09-30	129
2012-12-31	99
2013-03-31	399
2013-06-30	406
2013-09-30	552
2013-12-31	552
2014-03-31	625
2014-06-30	619
2014-09-30	541
2014-12-31	709
2015-03-31	536
2015-06-30	517
2015-09-30	591
2015-12-31	593
2016-03-31	646
2016-06-30	642
2016-09-30	690
2016-12-31	538
2017-03-31	508
2017-06-30	560
2017-09-30	653
2017-12-31	673
2018-03-31	561
2018-06-30	597
2018-09-30	664
2018-12-31	766
2019-03-31	655
2019-06-30	720
2019-09-30	731
2019-12-31	618
2020-03-31	572
2020-06-30	533
2020-09-30	576
2020-12-31	663
2021-03-31	600
2021-06-30	618
2021-09-30	731
2021-12-31	580
2022-03-31	588
2022-06-30	521
2022-09-30	444
2022-12-31	440
2023-03-31	462
2023-06-30	464
2023-09-30	414