Quarter	US dollars
2004-12-31	15
2005-03-31	26
2005-06-30	45
2005-09-30	32
2005-12-31	23
2006-03-31	52
2006-06-30	72
2006-09-30	75
2006-12-31	47
2007-03-31	65
2007-06-30	78
2007-09-30	110
2007-12-31	153
2008-03-31	159
2008-06-30	181
2008-09-30	192
2008-12-31	141
2009-03-31	245
2009-06-30	288
2009-09-30	440
2009-12-31	446
2010-03-31	270
2010-06-30	280
2010-09-30	239
2010-12-31	301
2011-03-31	476
2011-06-30	477
2011-09-30	500
2011-12-31	314
2012-03-31	276
2012-06-30	268
2012-09-30	302
2012-12-31	417
2013-03-31	106
2013-06-30	167
2013-09-30	261
2013-12-31	360
2014-03-31	278
2014-06-30	496
2014-09-30	289
2014-12-31	339
2015-03-31	494
2015-06-30	197
2015-09-30	2
2015-12-31	1
2016-03-31	1
2016-06-30	3
2016-09-30	3
2016-12-31	1
2017-03-31	3
2017-06-30	0
2017-09-30	0
2017-12-31	0
2018-03-31	0
2018-06-30	0
2018-09-30	0
2018-12-31	0
2019-03-31	0
2019-06-30	0
2019-09-30	1
2019-12-31	0
2020-03-31	1
2020-06-30	0
2020-09-30	0
2020-12-31	1
2021-03-31	1
2021-06-30	1
2021-09-30	1
2021-12-31	1
2022-03-31	1
2022-06-30	2
2022-09-30	2
2022-12-31	0
2023-03-31	0
2023-06-30	0
2023-09-30	0