Quarter	US dollars
2004-12-31	-806
2005-03-31	102
2005-06-30	-747
2005-09-30	1274
2005-12-31	-565
2006-03-31	-97
2006-06-30	-1953
2006-09-30	-2849
2006-12-31	-2472
2007-03-31	-1606
2007-06-30	-5351
2007-09-30	-611
2007-12-31	-7281
2008-03-31	-12301
2008-06-30	-9537
2008-09-30	-7488
2008-12-31	-4388
2009-03-31	-5513
2009-06-30	-4782
2009-09-30	176
2009-12-31	3407
2010-03-31	7056
2010-06-30	8732
2010-09-30	10134
2010-12-31	11643
2011-03-31	9818
2011-06-30	12670
2011-09-30	10425
2011-12-31	11461
2012-03-31	16342
2012-06-30	17342
2012-09-30	14760
2012-12-31	16760
2013-03-31	17830
2013-06-30	18197
2013-09-30	19783
2013-12-31	17472
2014-03-31	18120
2014-06-30	17422
2014-09-30	18041
2014-12-31	16075
2015-03-31	18381
2015-06-30	20674
2015-09-30	17277
2015-12-31	23310
2016-03-31	21594
2016-06-30	23180
2016-09-30	21136
2016-12-31	19610
2017-03-31	24280
2017-06-30	14258
2017-09-30	12714
2017-12-31	9284
2018-03-31	11733
2018-06-30	11401
2018-09-30	14186
2018-12-31	17357
2019-03-31	19022
2019-06-30	16324
2019-09-30	18030
2019-12-31	15946
2020-03-31	22654
2020-06-30	17199
2020-09-30	20448
2020-12-31	18840
2021-03-31	22980
2021-06-30	21462
2021-09-30	21133
2021-12-31	19284
2022-03-31	18561
2022-06-30	18780
2022-09-30	22081
2022-12-31	20100
2023-03-31	21179
2023-06-30	23212
2023-09-30	21639