Quarter	US dollars
2004-12-31	0
2005-03-31	0
2005-06-30	20
2005-09-30	19
2005-12-31	19
2006-03-31	73
2006-06-30	109
2006-09-30	108
2006-12-31	78
2007-03-31	29
2007-06-30	26
2007-09-30	26
2007-12-31	28
2008-03-31	30
2008-06-30	28
2008-09-30	12
2008-12-31	0
2009-03-31	0
2009-06-30	0
2009-09-30	125
2009-12-31	0
2010-03-31	0
2010-06-30	0
2010-09-30	0
2010-12-31	0
2011-03-31	5
2011-06-30	6
2011-09-30	3
2011-12-31	3
2012-03-31	3
2012-06-30	3
2012-09-30	3
2012-12-31	5
2013-03-31	6
2013-06-30	0
2013-09-30	15
2013-12-31	17
2014-03-31	162
2014-06-30	161
2014-09-30	172
2014-12-31	23
2015-03-31	13
2015-06-30	50
2015-09-30	70
2015-12-31	12
2016-03-31	27
2016-06-30	17
2016-09-30	35
2016-12-31	36
2017-03-31	28
2017-06-30	69
2017-09-30	134
2017-12-31	199
2018-03-31	3
2018-06-30	1
2018-09-30	26
2018-12-31	272
2019-03-31	268
2019-06-30	265
2019-09-30	237
2019-12-31	231
2020-03-31	227
2020-06-30	225
2020-09-30	220
2020-12-31	214
2021-03-31	212
2021-06-30	388
2021-09-30	382
2021-12-31	381
2022-03-31	379
2022-06-30	293
2022-09-30	188
2022-12-31	179
2023-03-31	174
2023-06-30	170
2023-09-30	165