Quarter	US dollars
2004-12-31	61
2005-03-31	60
2005-06-30	59
2005-09-30	53
2005-12-31	48
2006-03-31	52
2006-06-30	41
2006-09-30	35
2006-12-31	35
2007-03-31	124
2007-06-30	189
2007-09-30	29
2007-12-31	28
2008-03-31	20
2008-06-30	16
2008-09-30	23
2008-12-31	23
2009-03-31	26
2009-06-30	41
2009-09-30	93
2009-12-31	61
2010-03-31	67
2010-06-30	112
2010-09-30	113
2010-12-31	114
2011-03-31	96
2011-06-30	108
2011-09-30	114
2011-12-31	121
2012-03-31	142
2012-06-30	135
2012-09-30	92
2012-12-31	309
2013-03-31	181
2013-06-30	162
2013-09-30	188
2013-12-31	185
2014-03-31	190
2014-06-30	190
2014-09-30	154
2014-12-31	162
2015-03-31	160
2015-06-30	160
2015-09-30	171
2015-12-31	162
2016-03-31	162
2016-06-30	165
2016-09-30	162
2016-12-31	122
2017-03-31	123
2017-06-30	282
2017-09-30	283
2017-12-31	345
2018-03-31	380
2018-06-30	422
2018-09-30	320
2018-12-31	300
2019-03-31	361
2019-06-30	293
2019-09-30	282
2019-12-31	446
2020-03-31	406
2020-06-30	410
2020-09-30	414
2020-12-31	323
2021-03-31	330
2021-06-30	297
2021-09-30	302
2021-12-31	315
2022-03-31	288
2022-06-30	264
2022-09-30	350
2022-12-31	413
2023-03-31	345
2023-06-30	399
2023-09-30	377