Quarter	US dollars
2004-12-31	19
2005-03-31	17
2005-06-30	9
2005-09-30	4
2005-12-31	3
2006-03-31	3
2006-06-30	4
2006-09-30	9
2006-12-31	16
2007-03-31	12
2007-06-30	8
2007-09-30	10
2007-12-31	12
2008-03-31	12
2008-06-30	18
2008-09-30	27
2008-12-31	9
2009-03-31	6
2009-06-30	23
2009-09-30	26
2009-12-31	63
2010-03-31	8
2010-06-30	4
2010-09-30	5
2010-12-31	70
2011-03-31	5
2011-06-30	5
2011-09-30	22
2011-12-31	14
2012-03-31	3
2012-06-30	5
2012-09-30	3
2012-12-31	10
2013-03-31	8
2013-06-30	3
2013-09-30	6
2013-12-31	5
2014-03-31	5
2014-06-30	3
2014-09-30	24
2014-12-31	25
2015-03-31	4
2015-06-30	5
2015-09-30	5
2015-12-31	84
2016-03-31	106
2016-06-30	103
2016-09-30	101
2016-12-31	102
2017-03-31	101
2017-06-30	183
2017-09-30	182
2017-12-31	176
2018-03-31	122
2018-06-30	120
2018-09-30	108
2018-12-31	111
2019-03-31	113
2019-06-30	108
2019-09-30	107
2019-12-31	103
2020-03-31	100
2020-06-30	101
2020-09-30	102
2020-12-31	135
2021-03-31	128
2021-06-30	124
2021-09-30	135
2021-12-31	133
2022-03-31	149
2022-06-30	118
2022-09-30	105
2022-12-31	105
2023-03-31	107
2023-06-30	105
2023-09-30	104