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	208
2014-03-31	495
2014-06-30	409
2014-09-30	593
2014-12-31	474
2015-03-31	763
2015-06-30	1257
2015-09-30	1212
2015-12-31	969
2016-03-31	758
2016-06-30	807
2016-09-30	885
2016-12-31	776
2017-03-31	695
2017-06-30	927
2017-09-30	812
2017-12-31	998
2018-03-31	1189
2018-06-30	1060
2018-09-30	1071
2018-12-31	1080
2019-03-31	977
2019-06-30	964
2019-09-30	1051
2019-12-31	1092
2020-03-31	1186
2020-06-30	1457
2020-09-30	1258
2020-12-31	1624
2021-03-31	1421
2021-06-30	1531
2021-09-30	1479
2021-12-31	1379
2022-03-31	1404
2022-06-30	1192
2022-09-30	1321
2022-12-31	1119
2023-03-31	1097
2023-06-30	1207
2023-09-30	1065