Quarter	US dollars
2004-12-31	1056
2005-03-31	762
2005-06-30	635
2005-09-30	249
2005-12-31	141
2006-03-31	127
2006-06-30	135
2006-09-30	161
2006-12-31	153
2007-03-31	571
2007-06-30	1198
2007-09-30	3125
2007-12-31	66
2008-03-31	83
2008-06-30	72
2008-09-30	52
2008-12-31	63
2009-03-31	37
2009-06-30	58
2009-09-30	112
2009-12-31	131
2010-03-31	123
2010-06-30	197
2010-09-30	172
2010-12-31	136
2011-03-31	194
2011-06-30	175
2011-09-30	164
2011-12-31	155
2012-03-31	157
2012-06-30	155
2012-09-30	191
2012-12-31	480
2013-03-31	527
2013-06-30	529
2013-09-30	525
2013-12-31	559
2014-03-31	343
2014-06-30	492
2014-09-30	512
2014-12-31	510
2015-03-31	518
2015-06-30	436
2015-09-30	457
2015-12-31	455
2016-03-31	390
2016-06-30	396
2016-09-30	396
2016-12-31	385
2017-03-31	448
2017-06-30	186
2017-09-30	223
2017-12-31	254
2018-03-31	198
2018-06-30	260
2018-09-30	276
2018-12-31	192
2019-03-31	113
2019-06-30	55
2019-09-30	62
2019-12-31	61
2020-03-31	63
2020-06-30	52
2020-09-30	45
2020-12-31	44
2021-03-31	47
2021-06-30	94
2021-09-30	84
2021-12-31	85
2022-03-31	90
2022-06-30	53
2022-09-30	41
2022-12-31	82
2023-03-31	61
2023-06-30	61
2023-09-30	90