Quarter	US dollars
2004-12-31	21
2005-03-31	15
2005-06-30	22
2005-09-30	28
2005-12-31	33
2006-03-31	40
2006-06-30	50
2006-09-30	110
2006-12-31	262
2007-03-31	441
2007-06-30	492
2007-09-30	601
2007-12-31	940
2008-03-31	1363
2008-06-30	917
2008-09-30	775
2008-12-31	706
2009-03-31	209
2009-06-30	259
2009-09-30	366
2009-12-31	174
2010-03-31	83
2010-06-30	174
2010-09-30	109
2010-12-31	119
2011-03-31	128
2011-06-30	103
2011-09-30	95
2011-12-31	156
2012-03-31	302
2012-06-30	307
2012-09-30	220
2012-12-31	200
2013-03-31	305
2013-06-30	273
2013-09-30	272
2013-12-31	207
2014-03-31	494
2014-06-30	407
2014-09-30	563
2014-12-31	448
2015-03-31	736
2015-06-30	1227
2015-09-30	1181
2015-12-31	945
2016-03-31	732
2016-06-30	795
2016-09-30	863
2016-12-31	758
2017-03-31	678
2017-06-30	913
2017-09-30	798
2017-12-31	985
2018-03-31	1176
2018-06-30	1048
2018-09-30	1058
2018-12-31	1078
2019-03-31	980
2019-06-30	972
2019-09-30	1129
2019-12-31	1174
2020-03-31	1227
2020-06-30	1500
2020-09-30	1331
2020-12-31	1815
2021-03-31	1646
2021-06-30	1672
2021-09-30	1605
2021-12-31	1540
2022-03-31	1619
2022-06-30	1326
2022-09-30	1478
2022-12-31	1195
2023-03-31	1131
2023-06-30	1245
2023-09-30	1122