Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	0
2005-09-30	0
2005-12-31	0
2006-03-31	0
2006-06-30	0
2006-09-30	0
2006-12-31	0
2007-03-31	0
2007-06-30	2
2007-09-30	0
2007-12-31	0
2008-03-31	0
2008-06-30	0
2008-09-30	0
2008-12-31	3
2009-03-31	0
2009-06-30	2
2009-09-30	2
2009-12-31	2
2010-03-31	2
2010-06-30	189
2010-09-30	241
2010-12-31	512
2011-03-31	380
2011-06-30	472
2011-09-30	1541
2011-12-31	1511
2012-03-31	2864
2012-06-30	2823
2012-09-30	2550
2012-12-31	2923
2013-03-31	3589
2013-06-30	3250
2013-09-30	2698
2013-12-31	2301
2014-03-31	2111
2014-06-30	2050
2014-09-30	2108
2014-12-31	1737
2015-03-31	1603
2015-06-30	1578
2015-09-30	1521
2015-12-31	1402
2016-03-31	1284
2016-06-30	1241
2016-09-30	1207
2016-12-31	1070
2017-03-31	1036
2017-06-30	925
2017-09-30	613
2017-12-31	501
2018-03-31	457
2018-06-30	415
2018-09-30	462
2018-12-31	308
2019-03-31	300
2019-06-30	284
2019-09-30	282
2019-12-31	137
2020-03-31	156
2020-06-30	163
2020-09-30	190
2020-12-31	201
2021-03-31	235
2021-06-30	211
2021-09-30	224
2021-12-31	179
2022-03-31	283
2022-06-30	255
2022-09-30	251
2022-12-31	227
2023-03-31	224
2023-06-30	219
2023-09-30	270