Quarter	US dollars
2004-12-31	17
2005-03-31	21
2005-06-30	16
2005-09-30	99
2005-12-31	115
2006-03-31	123
2006-06-30	144
2006-09-30	161
2006-12-31	112
2007-03-31	110
2007-06-30	120
2007-09-30	130
2007-12-31	135
2008-03-31	121
2008-06-30	127
2008-09-30	137
2008-12-31	141
2009-03-31	156
2009-06-30	184
2009-09-30	200
2009-12-31	207
2010-03-31	174
2010-06-30	196
2010-09-30	197
2010-12-31	221
2011-03-31	231
2011-06-30	254
2011-09-30	266
2011-12-31	288
2012-03-31	270
2012-06-30	271
2012-09-30	262
2012-12-31	233
2013-03-31	243
2013-06-30	262
2013-09-30	264
2013-12-31	258
2014-03-31	260
2014-06-30	270
2014-09-30	295
2014-12-31	339
2015-03-31	325
2015-06-30	313
2015-09-30	336
2015-12-31	327
2016-03-31	296
2016-06-30	23
2016-09-30	16
2016-12-31	30
2017-03-31	39
2017-06-30	21
2017-09-30	20
2017-12-31	27
2018-03-31	156
2018-06-30	152
2018-09-30	153
2018-12-31	143
2019-03-31	146
2019-06-30	144
2019-09-30	139
2019-12-31	143
2020-03-31	144
2020-06-30	133
2020-09-30	136
2020-12-31	132
2021-03-31	177
2021-06-30	50
2021-09-30	49
2021-12-31	46
2022-03-31	46
2022-06-30	45
2022-09-30	47
2022-12-31	45
2023-03-31	45
2023-06-30	45
2023-09-30	45