Quarter	US dollars
2004-12-31	10
2005-03-31	11
2005-06-30	91
2005-09-30	80
2005-12-31	7
2006-03-31	23
2006-06-30	20
2006-09-30	22
2006-12-31	23
2007-03-31	24
2007-06-30	28
2007-09-30	24
2007-12-31	30
2008-03-31	38
2008-06-30	131
2008-09-30	148
2008-12-31	158
2009-03-31	159
2009-06-30	188
2009-09-30	134
2009-12-31	195
2010-03-31	202
2010-06-30	177
2010-09-30	180
2010-12-31	141
2011-03-31	180
2011-06-30	125
2011-09-30	128
2011-12-31	127
2012-03-31	131
2012-06-30	91
2012-09-30	108
2012-12-31	112
2013-03-31	117
2013-06-30	115
2013-09-30	89
2013-12-31	99
2014-03-31	97
2014-06-30	85
2014-09-30	83
2014-12-31	84
2015-03-31	91
2015-06-30	93
2015-09-30	108
2015-12-31	142
2016-03-31	131
2016-06-30	133
2016-09-30	140
2016-12-31	121
2017-03-31	96
2017-06-30	113
2017-09-30	87
2017-12-31	196
2018-03-31	229
2018-06-30	412
2018-09-30	366
2018-12-31	338
2019-03-31	1115
2019-06-30	909
2019-09-30	1063
2019-12-31	1013
2020-03-31	1008
2020-06-30	702
2020-09-30	695
2020-12-31	618
2021-03-31	604
2021-06-30	573
2021-09-30	570
2021-12-31	527
2022-03-31	450
2022-06-30	419
2022-09-30	483
2022-12-31	475
2023-03-31	518
2023-06-30	444
2023-09-30	443