Quarter	US dollars
2004-12-31	3654
2005-03-31	4276
2005-06-30	3182
2005-09-30	4864
2005-12-31	4135
2006-03-31	5034
2006-06-30	4291
2006-09-30	2939
2006-12-31	2912
2007-03-31	3877
2007-06-30	3810
2007-09-30	4706
2007-12-31	4330
2008-03-31	4931
2008-06-30	4386
2008-09-30	3979
2008-12-31	3065
2009-03-31	3730
2009-06-30	4856
2009-09-30	3656
2009-12-31	3485
2010-03-31	3405
2010-06-30	3944
2010-09-30	3075
2010-12-31	3104
2011-03-31	3820
2011-06-30	2834
2011-09-30	2444
2011-12-31	1860
2012-03-31	2420
2012-06-30	1649
2012-09-30	1852
2012-12-31	1138
2013-03-31	1167
2013-06-30	1471
2013-09-30	1435
2013-12-31	615
2014-03-31	1451
2014-06-30	1344
2014-09-30	1341
2014-12-31	1146
2015-03-31	1176
2015-06-30	1155
2015-09-30	701
2015-12-31	646
2016-03-31	936
2016-06-30	1033
2016-09-30	1291
2016-12-31	626
2017-03-31	1516
2017-06-30	1767
2017-09-30	1448
2017-12-31	1991
2018-03-31	2562
2018-06-30	2212
2018-09-30	1904
2018-12-31	485
2019-03-31	648
2019-06-30	200
2019-09-30	447
2019-12-31	312
2020-03-31	1048
2020-06-30	258
2020-09-30	255
2020-12-31	449
2021-03-31	497
2021-06-30	651
2021-09-30	386
2021-12-31	371
2022-03-31	240
2022-06-30	469
2022-09-30	500
2022-12-31	487
2023-03-31	1070
2023-06-30	588
2023-09-30	154