Quarter	US dollars
2004-12-31	102
2005-03-31	98
2005-06-30	75
2005-09-30	71
2005-12-31	82
2006-03-31	135
2006-06-30	54
2006-09-30	58
2006-12-31	43
2007-03-31	49
2007-06-30	94
2007-09-30	69
2007-12-31	109
2008-03-31	143
2008-06-30	145
2008-09-30	135
2008-12-31	244
2009-03-31	216
2009-06-30	219
2009-09-30	222
2009-12-31	252
2010-03-31	262
2010-06-30	242
2010-09-30	241
2010-12-31	213
2011-03-31	212
2011-06-30	112
2011-09-30	259
2011-12-31	745
2012-03-31	257
2012-06-30	166
2012-09-30	63
2012-12-31	307
2013-03-31	68
2013-06-30	247
2013-09-30	232
2013-12-31	83
2014-03-31	253
2014-06-30	227
2014-09-30	220
2014-12-31	179
2015-03-31	150
2015-06-30	129
2015-09-30	62
2015-12-31	113
2016-03-31	56
2016-06-30	110
2016-09-30	103
2016-12-31	234
2017-03-31	100
2017-06-30	126
2017-09-30	127
2017-12-31	132
2018-03-31	438
2018-06-30	371
2018-09-30	340
2018-12-31	360
2019-03-31	348
2019-06-30	328
2019-09-30	310
2019-12-31	289
2020-03-31	258
2020-06-30	264
2020-09-30	273
2020-12-31	308
2021-03-31	44
2021-06-30	39
2021-09-30	47
2021-12-31	39
2022-03-31	28
2022-06-30	32
2022-09-30	31
2022-12-31	31
2023-03-31	47
2023-06-30	36
2023-09-30	29