Quarter	US dollars
2004-12-31	48
2005-03-31	17
2005-06-30	18
2005-09-30	25
2005-12-31	17
2006-03-31	16
2006-06-30	13
2006-09-30	9
2006-12-31	18
2007-03-31	63
2007-06-30	18
2007-09-30	20
2007-12-31	38
2008-03-31	24
2008-06-30	82
2008-09-30	116
2008-12-31	42
2009-03-31	136
2009-06-30	40
2009-09-30	168
2009-12-31	86
2010-03-31	123
2010-06-30	221
2010-09-30	370
2010-12-31	427
2011-03-31	361
2011-06-30	628
2011-09-30	361
2011-12-31	275
2012-03-31	286
2012-06-30	198
2012-09-30	216
2012-12-31	142
2013-03-31	172
2013-06-30	405
2013-09-30	445
2013-12-31	236
2014-03-31	153
2014-06-30	371
2014-09-30	198
2014-12-31	189
2015-03-31	168
2015-06-30	601
2015-09-30	154
2015-12-31	172
2016-03-31	216
2016-06-30	509
2016-09-30	273
2016-12-31	245
2017-03-31	173
2017-06-30	175
2017-09-30	237
2017-12-31	247
2018-03-31	641
2018-06-30	500
2018-09-30	621
2018-12-31	951
2019-03-31	1553
2019-06-30	1436
2019-09-30	1173
2019-12-31	1000
2020-03-31	977
2020-06-30	1177
2020-09-30	1248
2020-12-31	1623
2021-03-31	2149
2021-06-30	2150
2021-09-30	1683
2021-12-31	2458
2022-03-31	2153
2022-06-30	2152
2022-09-30	2285
2022-12-31	2353
2023-03-31	2159
2023-06-30	1730
2023-09-30	1149