Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	12
2006-03-31	49
2006-06-30	39
2006-09-30	41
2006-12-31	67
2007-03-31	82
2007-06-30	110
2007-09-30	49
2007-12-31	86
2008-03-31	89
2008-06-30	90
2008-09-30	102
2008-12-31	24
2009-03-31	106
2009-06-30	178
2009-09-30	214
2009-12-31	139
2010-03-31	214
2010-06-30	177
2010-09-30	210
2010-12-31	106
2011-03-31	101
2011-06-30	83
2011-09-30	139
2011-12-31	127
2012-03-31	288
2012-06-30	260
2012-09-30	260
2012-12-31	270
2013-03-31	328
2013-06-30	322
2013-09-30	274
2013-12-31	251
2014-03-31	332
2014-06-30	354
2014-09-30	340
2014-12-31	437
2015-03-31	448
2015-06-30	1294
2015-09-30	1300
2015-12-31	1280
2016-03-31	1024
2016-06-30	1159
2016-09-30	1226
2016-12-31	1142
2017-03-31	1124
2017-06-30	1404
2017-09-30	1312
2017-12-31	1442
2018-03-31	1633
2018-06-30	1617
2018-09-30	1382
2018-12-31	1105
2019-03-31	1582
2019-06-30	1268
2019-09-30	1029
2019-12-31	984
2020-03-31	1018
2020-06-30	859
2020-09-30	797
2020-12-31	755
2021-03-31	742
2021-06-30	777
2021-09-30	775
2021-12-31	798
2022-03-31	686
2022-06-30	1121
2022-09-30	1137
2022-12-31	1081
2023-03-31	1023
2023-06-30	514
2023-09-30	534