Quarter	US dollars
2004-12-31	0
2005-03-31	2
2005-06-30	0
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	24
2007-06-30	20
2007-09-30	55
2007-12-31	0
2008-03-31	16
2008-06-30	20
2008-09-30	16
2008-12-31	86
2009-03-31	76
2009-06-30	91
2009-09-30	184
2009-12-31	113
2010-03-31	115
2010-06-30	102
2010-09-30	95
2010-12-31	117
2011-03-31	232
2011-06-30	223
2011-09-30	184
2011-12-31	184
2012-03-31	281
2012-06-30	403
2012-09-30	304
2012-12-31	280
2013-03-31	434
2013-06-30	241
2013-09-30	245
2013-12-31	231
2014-03-31	202
2014-06-30	181
2014-09-30	206
2014-12-31	186
2015-03-31	177
2015-06-30	187
2015-09-30	144
2015-12-31	144
2016-03-31	116
2016-06-30	99
2016-09-30	74
2016-12-31	85
2017-03-31	83
2017-06-30	57
2017-09-30	36
2017-12-31	53
2018-03-31	46
2018-06-30	29
2018-09-30	25
2018-12-31	24
2019-03-31	20
2019-06-30	29
2019-09-30	26
2019-12-31	21
2020-03-31	22
2020-06-30	20
2020-09-30	18
2020-12-31	15
2021-03-31	18
2021-06-30	19
2021-09-30	22
2021-12-31	22
2022-03-31	18
2022-06-30	16
2022-09-30	19
2022-12-31	19
2023-03-31	23
2023-06-30	50
2023-09-30	72