Quarter	US dollars
2004-12-31	4
2005-03-31	2
2005-06-30	2
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	2
2007-09-30	0
2007-12-31	0
2008-03-31	2
2008-06-30	2
2008-09-30	2
2008-12-31	3
2009-03-31	1
2009-06-30	21
2009-09-30	22
2009-12-31	3
2010-03-31	3
2010-06-30	3
2010-09-30	5
2010-12-31	6
2011-03-31	18
2011-06-30	67
2011-09-30	70
2011-12-31	77
2012-03-31	82
2012-06-30	246
2012-09-30	71
2012-12-31	121
2013-03-31	73
2013-06-30	23
2013-09-30	144
2013-12-31	136
2014-03-31	88
2014-06-30	357
2014-09-30	246
2014-12-31	161
2015-03-31	196
2015-06-30	173
2015-09-30	109
2015-12-31	274
2016-03-31	216
2016-06-30	246
2016-09-30	314
2016-12-31	1217
2017-03-31	1627
2017-06-30	1724
2017-09-30	1888
2017-12-31	1814
2018-03-31	1754
2018-06-30	1876
2018-09-30	1664
2018-12-31	1694
2019-03-31	1811
2019-06-30	1554
2019-09-30	1513
2019-12-31	1556
2020-03-31	1583
2020-06-30	1546
2020-09-30	1476
2020-12-31	1379
2021-03-31	1446
2021-06-30	1470
2021-09-30	1156
2021-12-31	1302
2022-03-31	1065
2022-06-30	1379
2022-09-30	1370
2022-12-31	945
2023-03-31	809
2023-06-30	680
2023-09-30	568