Quarter	US dollars
2004-12-31	25
2005-03-31	4
2005-06-30	4
2005-09-30	7
2005-12-31	5
2006-03-31	5
2006-06-30	7
2006-09-30	11
2006-12-31	10
2007-03-31	14
2007-06-30	16
2007-09-30	29
2007-12-31	16
2008-03-31	149
2008-06-30	141
2008-09-30	162
2008-12-31	118
2009-03-31	128
2009-06-30	120
2009-09-30	130
2009-12-31	124
2010-03-31	115
2010-06-30	150
2010-09-30	142
2010-12-31	125
2011-03-31	147
2011-06-30	154
2011-09-30	95
2011-12-31	62
2012-03-31	157
2012-06-30	184
2012-09-30	208
2012-12-31	239
2013-03-31	124
2013-06-30	228
2013-09-30	225
2013-12-31	250
2014-03-31	233
2014-06-30	380
2014-09-30	371
2014-12-31	470
2015-03-31	368
2015-06-30	635
2015-09-30	630
2015-12-31	631
2016-03-31	459
2016-06-30	501
2016-09-30	472
2016-12-31	134
2017-03-31	180
2017-06-30	294
2017-09-30	232
2017-12-31	270
2018-03-31	272
2018-06-30	296
2018-09-30	286
2018-12-31	363
2019-03-31	306
2019-06-30	307
2019-09-30	419
2019-12-31	472
2020-03-31	414
2020-06-30	356
2020-09-30	383
2020-12-31	323
2021-03-31	370
2021-06-30	373
2021-09-30	272
2021-12-31	232
2022-03-31	183
2022-06-30	364
2022-09-30	331
2022-12-31	324
2023-03-31	391
2023-06-30	438
2023-09-30	576