Quarter	US dollars
2004-12-31	0
2005-03-31	19
2005-06-30	0
2005-09-30	30
2005-12-31	10
2006-03-31	0
2006-06-30	11
2006-09-30	2
2006-12-31	0
2007-03-31	147
2007-06-30	36
2007-09-30	59
2007-12-31	4
2008-03-31	8
2008-06-30	56
2008-09-30	14
2008-12-31	9
2009-03-31	1
2009-06-30	3
2009-09-30	3
2009-12-31	6
2010-03-31	5
2010-06-30	7
2010-09-30	24
2010-12-31	23
2011-03-31	2
2011-06-30	2
2011-09-30	28
2011-12-31	15
2012-03-31	1178
2012-06-30	935
2012-09-30	250
2012-12-31	154
2013-03-31	161
2013-06-30	232
2013-09-30	201
2013-12-31	51
2014-03-31	57
2014-06-30	115
2014-09-30	44
2014-12-31	41
2015-03-31	83
2015-06-30	126
2015-09-30	6
2015-12-31	61
2016-03-31	413
2016-06-30	220
2016-09-30	21
2016-12-31	21
2017-03-31	14
2017-06-30	165
2017-09-30	76
2017-12-31	195
2018-03-31	123
2018-06-30	141
2018-09-30	219
2018-12-31	170
2019-03-31	274
2019-06-30	447
2019-09-30	362
2019-12-31	503
2020-03-31	375
2020-06-30	742
2020-09-30	521
2020-12-31	586
2021-03-31	538
2021-06-30	677
2021-09-30	750
2021-12-31	562
2022-03-31	449
2022-06-30	410
2022-09-30	415
2022-12-31	403
2023-03-31	410
2023-06-30	229
2023-09-30	414