Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	2
2005-12-31	0
2006-03-31	2
2006-06-30	2
2006-09-30	6
2006-12-31	8
2007-03-31	8
2007-06-30	10
2007-09-30	10
2007-12-31	12
2008-03-31	22
2008-06-30	20
2008-09-30	23
2008-12-31	24
2009-03-31	29
2009-06-30	38
2009-09-30	30
2009-12-31	13
2010-03-31	12
2010-06-30	33
2010-09-30	38
2010-12-31	145
2011-03-31	136
2011-06-30	143
2011-09-30	576
2011-12-31	507
2012-03-31	1322
2012-06-30	1349
2012-09-30	1382
2012-12-31	1749
2013-03-31	1936
2013-06-30	2037
2013-09-30	2053
2013-12-31	1759
2014-03-31	1566
2014-06-30	1455
2014-09-30	1406
2014-12-31	1395
2015-03-31	1238
2015-06-30	1156
2015-09-30	1086
2015-12-31	1089
2016-03-31	992
2016-06-30	838
2016-09-30	537
2016-12-31	492
2017-03-31	429
2017-06-30	333
2017-09-30	239
2017-12-31	180
2018-03-31	128
2018-06-30	120
2018-09-30	211
2018-12-31	65
2019-03-31	55
2019-06-30	47
2019-09-30	47
2019-12-31	37
2020-03-31	30
2020-06-30	54
2020-09-30	54
2020-12-31	55
2021-03-31	30
2021-06-30	48
2021-09-30	63
2021-12-31	46
2022-03-31	41
2022-06-30	42
2022-09-30	77
2022-12-31	154
2023-03-31	153
2023-06-30	147
2023-09-30	130